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中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280

iron

noun
 
/ˈaɪən/
/ˈaɪərn/
Idioms
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    metal金属

  1.  
     [uncountable]
    (symbol Fe)
    a chemical element. Iron is a hard strong metal that is used to make steel and is also found in small quantities in blood and food.铁
    • iron gates/bars/railings铁门；铁栅；铁栏杆
    • a hut with a corrugated iron roof一个波纹铁皮屋顶的小棚子
    • the iron and steel industries钢铁工业
    • iron ore (= rock containing iron)铁矿石
    • foods that are rich in iron富含铁的食物
    • patients with iron deficiency (= not enough iron in their blood)缺铁型病人
    • iron tablets (= containing iron prepared as a medicine)含铁的药片
    • (figurative) She had a will of iron (= it was very strong).她有钢铁般的意志。
    see also cast iron, pig iron, wrought ironTopics Physics and chemistryb1
    Oxford Collocations Dictionaryadjective
    • rusty
    • cast
    • corrugated
    • …
    verb + iron
    • make
    • produce
    • smelt
    • …
    iron + verb
    • rust
    iron + noun
    • ore
    • bar
    • gate
    • …
    See full entry
    2.

    tool工具

  2.  
     [countable] a tool with a flat metal base that can be heated and used to make clothes smooth熨斗
    • a steam iron蒸汽熨斗
    Extra Examples
    • I just need to run an iron over my shirt, then I'm ready.我只需用熨斗熨一下衬衫就准备好了。
    • Use a cool iron on synthetics.合成纤维的布料要用低温熨斗。
    Topics Houses and homesb1
    Oxford Collocations Dictionaryadjective
    • hot
    • warm
    • electric
    • …
    verb + iron
    • use
    See full entry
  3. [countable] (usually in compounds通常构成复合词) a tool made of iron or another metal 铁器；金属工具see also branding iron, grappling iron, soldering iron, tire iron
    Oxford Collocations Dictionaryadjective
    • hot
    • warm
    • electric
    • …
    verb + iron
    • use
    See full entry
    4.

    for prisoners囚犯

  4. irons
     [plural] chains or other heavy objects made of iron, attached to the arms and legs of prisoners, especially in the past（尤指旧时的）镣铐
    • leg irons脚镣
    • (old-fashioned) to clap somebody in irons拍拍手
    5.

    in golf高尔夫球

  5. [countable] one of the set of clubs (= sticks for hitting the ball with) that have a metal head铁头球杆
    • He hit a magnificent shot with a nine iron.他用九号铁击出一记壮举。
    compare woodTopics Sports: ball and racket sportsc2
    6. Word OriginOld English īren, īsen, īsern, of Germanic origin; related to Dutch ijzer and German Eisen, and probably ultimately from Celtic.
Idioms
have several, etc. irons in the fire
  1. to be involved in several activities or areas of business at the same time, hoping that at least one will be successful分散活动（或经营）；广泛撒网
pump iron
  1. (informal) to do exercises in which you lift heavy weights in order to make your muscles stronger举重（锻炼）Topics Health and Fitnessc2
rule (somebody/something) with a rod of iron
  1. to control a person or a group of people very severely残酷统治；严厉控制
strike while the iron is hot
  1. (saying) to make use of an opportunity immediately趁热打铁

iron

verb
 
/ˈaɪən/
/ˈaɪərn/
[transitive, intransitive]
Verb Forms
present simple I / you / we / they iron
/ˈaɪən/
/ˈaɪərn/
he / she / it irons
/ˈaɪənz/
/ˈaɪərnz/
past simple ironed
/ˈaɪənd/
/ˈaɪərnd/
past participle ironed
/ˈaɪənd/
/ˈaɪərnd/
-ing form ironing
/ˈaɪənɪŋ/
/ˈaɪərnɪŋ/
Phrasal Verbs
jump to other results
  1. to make clothes, etc. smooth by using an iron（用熨斗）熨，烫平
    • He was ironing when I arrived.我到的时候他正在熨衣服。
    • iron something I'll need to iron that dress before I can wear it.我得先把那件连衣裙烫平再穿。
    see also ironing
    Extra Examples
    • Her clothes were always beautifully ironed.她的衣服总是熨得很漂亮。
    • My jeans need ironing.我的牛仔裤需要熨一下。
    • a neat pile of freshly ironed shirts一叠齐整的刚熨好的衬衫
    Topics Houses and homesb1
    Word OriginOld English īren, īsen, īsern, of Germanic origin; related to Dutch ijzer and German Eisen, and probably ultimately from Celtic.

iron

adjective
/ˈaɪən/
/ˈaɪərn/
[only before noun]Idioms
jump to other results
  1. very strong and determined坚强的；强硬坚定的
    • She was known as the ‘Iron Lady’.大家都称她为 “铁娘子”。
    • a man of iron will意志坚强的男子
    Word OriginOld English īren, īsen, īsern, of Germanic origin; related to Dutch ijzer and German Eisen, and probably ultimately from Celtic.
Idioms
an iron fist/hand (in a velvet glove)
  1. if you use the words an iron fist/hand when describing the way that somebody behaves, you mean that they treat people severely. This treatment may be hidden behind a kind appearance (the velvet glove).（温和背后的）铁拳
    • They promised that the army would strike with an iron fist at any resistance.他们承诺，军队将在任何抵抗下用铁拳进行打击。
    • The iron hand in the velvet glove approach seems to work best with this age group.天鹅绒手套方法中的铁手似乎最适合这个年龄段的人。
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
元素

名称
铁
元素符号
Fe
原子

序数
26
相对原子质量

(12C = 12.0000)
  55.845
英文名称
Iron
原

子

结

构
原子半径/Å:1.72     原子体积/cm3/mol: 7.1  共价半径/Å: 1.17   

电子构型: 1s2 2s2p6 3s2p6d6 4s2离子半径/Å: 0.645   氧化态: 2,3		 电子模型
发

现
古代就已知。
来

源
从铁矿获得。 用途 作为钢和合金被广泛使用，是血色素的主要成分。　
物

理

性

质
状态：银白色过渡金属。                             熔 点(℃):1535         沸 点(℃): 2750       密度(g/cc，300K):7.874   

比 热/J/gK :0.44          蒸发热/KJ/mol : 349.6    熔化热/KJ/mol: 13.8   

导电率／106/cm :0.0993   导热系数／W/cmK:0.802      
化

学

性

质
　
地

质

数

据
丰  度           滞留时间/年: 98        

太阳(相对于 H=1×1012):3.16 × 107    海水中/p.p.m.

地壳/p.p.m.: 41 000        大西洋表面:1 × 10-4         太平洋表面:0.1 × 10-4

大气/p.p.m.（体积）:             大西洋深处: 4 × 10-4     太平洋深处:1 × 10-4
生

物

数

据
人体中含量           肝/p.p.m.: 250 -1400 

 器官中:           肌肉/p.p.m.: 180

 血/mg dm-3 : 447        日摄入量/mg: 6 - 40

 骨/p.p.m.: 3 - 380      人(70Kg)均体内总量/g: 4.2
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280

铁


【中文名称】铁

【英文名称】iron

【分子式】Fe

【分子量】55.845

【密度】7.86

【熔点】1535

【沸点】约2800

【闪点】

【蒸汽压】

【粘度】

【折射率】

【毒性】LD3874(mg/kg)

【性状】银灰色金属，质地坚韧，延展性很好。

【溶解】溶于硫酸、盐酸和稀硝酸。

【用途】铁是工业上不可缺少的金属。纯铁可用于制发电机和电动机的铁心，还原铁粉可用于粉末冶金，钢即含少量碳的铁合金，广泛用于制造机器和工具。

【制备或来源】重要的铁矿有磁铁矿、赤铁矿、褐铁矿和菱铁矿等。纯铁可由高纯度的氧化铁用氢气还原而得。工业用铁可将铁矿、焦炭和助熔剂（如石灰石等）放在高炉中冶炼而得。

【其他】原子序数26，原子量55.86，主要化合价+2、+3。 氧化物离解能（Do）：4.0（eV） 元素电离能（Ei）： 7.87(eV) 主要吸收线及其参数： ┌────┬───┬──┬──┬──┬───┬───┐ │λ(nm) │ 　 f │ W │ F │ S* │ CL　│ R·S │ ├────┼───┼──┼──┼──┼───┼───┤ │248.3 │0.34 │ 0.2│A-A │0.08│0.0 2 │ 1.0 │ │248.8 │ │ 0.2│A-A │0.13│ │ 1.7 │ │252.3 │0.30 │ 0.2│A-A │0.3 │ 　 │ 4.6 │ │271.9 │0.15 │ 0.2│A-A │0.5 │　　　│ │ │302.1(D)│0.08 │ 0.2│A-A │0.7 │　　　│ 3.7 │ │250.1 │ │ │ │ │　　　│ │ │216.7 │ │ │ │ │　　　│ │ │296.7 │0.06 │ 0.2│A-A │1.0 │　　　│ │ │372.0 │0.04 │ 0.2│A-A │1.0 │　　　│5.7 │ │373.7 │ │ 0.2│A-A │ │　　　│10.0 │ │386.0 │0.034 │ 0.2│A-A │2.0 │　　　│ │ │298.4 │ │ │ │ │　　　│ │ │293.7 │ │ │ │ │　　　│ │ │344.1(D)│0.055 │ 0.2│A-A │5.0 │　　　│14.0 │ │382.4 │ │ 0.2│A-A │3.0 │　　　│ │ │368.0 │ │ │ │ │　　　│ │ │305.9 │ │ 0.2│A-A │ │　　　│230 │ │346.6 │ │ 0.2│A-A │ │　　　│110 │ │392.0 │ │ 0.2│A-A │ │　　　│130 │ └────┴───┴──┴──┴──┴───┴───┘ λ：波长 f：振子强度 W：单色器光谱通带 A-A（空气乙炔焰） S*：元素的特征浓度（1%吸收灵敏度） CL：元素的检测极限 R·S：同一元素主要吸收线间的相对灵敏度 F：火焰类型

【包装及贮运】

【生产单位】

中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
ironironD.J.:[ˈaiən]K.K.:[ˈaɪən]n.1.■铁2.■熨斗3.■镣铐4.■坚强, 刚强; 冷酷There is more iron to her than I supposed.她比我原来想像的要坚强得多。vt. & vi.1.■熨平She's been ironing all afternoon.她一下午都在熨衣服。
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
iron noun | verb | adjective
 1 
i·ron / 5aI[n ; 5aIEn /noun
1. METAL 金属 Ua common hard metal that is used to make steel, is MAGNETIC, and is found in very small quantities in food and blood. It is a chemical ELEMENT: symbol Fe 铁〔一种化学元素，符号为 Fe〕:
•the iron and steel industry钢铁工业
•a driveway with large iron gates安装了大铁门的私家车道
•iron ore (=rock that contains iron)铁矿石
•the absorption of iron from food食物中铁的吸收
⇒WROUGHT IRON,CAST IRON
⇒picture atMATERIAL
2. FOR CLOTHES 用于衣服, Ca thing used for making clothes smooth, which has a heated flat metal base熨斗
3. have several irons in the fire to be involved in several different activities or have several plans all happening at the same time同时从事数种不同活动; 同时有数项计划:
•He has several economic irons in the fire, including gold and diamond mines.他同时经营数个经济项目，包括金矿和钻石矿。
4. SPORT 体育运动, Ca GOLF CLUB made of metal rather than wood〔高尔夫球〕铁头球杆:
•a 5-iron 5号铁头球杆
⇒picture atGOLF
5. CHAINS 镣铐, irons pl.especially literarya chain used to prevent a prisoner from moving镣铐:
•leg irons脚镣
⇒a will of iron / an iron will at WILL² (1)
⇒pump iron at PUMP² (8)
⇒rule sb / sth with a rod of iron at RULE² (5)
⇒strike while the iron's hot at STRIKE¹ (27)
 2 
ironverb T
1. to make clothes smooth using an iron〔用熨斗〕熨平;SYNpress
•Have you ironed my shirt?你把我的衬衫熨过了吗？
⇒IRONING
 PHRASAL VERBS 
iron sth ↔ out
to solve or get rid of problems or difficulties, especially small ones消除，解决〔尤指小问题或困难〕:
•We need to iron out a few problems first.我们需要先解决几个问题。
 3 
ironadjective only before noun
1. very firm and strong or determined极坚强的; 极坚定的:
•He runs the company with an iron fist .他以铁腕方式经营着公司。
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280

iron
1 iron /ˈajɚn/ noun
plural irons
1 iron
/ˈajɚn/
noun
plural irons
Learner's definition of IRON
1 
[noncount] : a heavy type of metal that is very common, occurs naturally in blood, and is used to make steel and in many products铁
— sometimes used figuratively有时用作比喻
— see also cast iron, wrought iron
2 
[count] : a device with a flat metal base that is heated and is used to press wrinkles out of clothing熨斗
— see also curling iron, soldering iron, waffle iron
3 
[count] : a golf club that has a metal head and is identified by a number（高尔夫球）铁头球棒
— compare wood
4 
irons [plural] : chains placed on a prisoner's arms or legs镣铐

irons in the fire

: activities or projects that someone is involved in同时从事的数种活动（或数个项目）

pump iron

— see 2pump

strike while the iron is hot

— see 1strike
2 iron /ˈajɚn/ adjective
2 iron
/ˈajɚn/
adjective
Learner's definition of IRON
1 
: made of iron铁的；铁制的
2 
always used before a noun : very strong强健的；坚强的；强有力的

iron man

: a man who is very strong and is able to do something (such as play a sport) for a long time without injury or illness铁人

rule with an iron fist/hand, rule with a rod of iron

— see 2rule
3 iron /ˈajɚn/ verb
irons; ironed; ironing
3 iron
/ˈajɚn/
verb
irons; ironed; ironing
Learner's definition of IRON
: to use a heated iron to make clothing or fabric smooth（用熨斗）熨，烫平
[+ object]
[no object]

iron out

[phrasal verb]
1 
iron (something) out or iron out (something)
: to remove (wrinkles) in cloth by using a heated iron熨平（衣物褶皱）
2 
a  : to find a solution to (something) : to fix or correct (something)解决（问题）
b  : to reach an agreement about (something)达成协议；达成一致
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280
中考 高考 CET-4 CET-6 考研 BNC: 1877 COCA: 2280

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