H
n. 英语字母中的第八个字母，小写为h
symb. 氢（化学元素）
n.
英语字母表的第8个字母；[电影]分尸；
英英释义
H[ eitʃ ]
n.
a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
同义词：hydrogenatomic number 1
a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second
同义词：henry
the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
同义词：Planck's constant
the 8th letter of the Roman alphabet
同义词：letter h
(thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
"enthalpy is the amount of energy in a system capable of doing mechanical work"
同义词：heat contenttotal heatenthalpy
词组短语
h beam宽幅工字梁；宽缘工字梁；工字梁
权威例句
State-space solutions to standard H/sub 2/ and H/sub infinity / control problemsGO-guided direct growth of highly oriented metal–organic framework nanosheet membranes for H 2 /CO 2 separation
Analisis Bullwhip Effect Barang Fast Moving Pada Divisi Non Food Soft Line Kategori Haba & Toiletries Studi Kasus Di Assalaam Hyperm...
The Cauchy problem for the Kadomtsev-Petviashvili equation (KPII) in Sobolev spaces H s , s>0
Composition and Properties of Petroleum : H. J. Neumann, B. Paczynaski-Lahme and D. Severin 1981, 137 p., $9.50, John Wiley & Sons L...
Notice of Intent, Pursuant to the Authority in Section 2(h)(7) of the Commodity Exchange Act and Commission Rule 36.3(c)(3), To Unde...
Protein Measurement With Folin Fenol Reagent
Electrophoretic Transfer of Proteins from Polyacrylamide Gels to Nitrocellulose Sheets: Procedure and Some Applications
Adaptation in natural and artificial systems
The Theory of Island Biogeography
H
eighth letter of the alphabet; it comes from Phoenician, via Greek and Latin. In Phoenician it originally had a rough guttural sound like German Reich or Scottish loch. In Greek at first it had the value of Modern English -h-, and with this value it passed into the Latin alphabet via Greek colonies in Italy. Subsequently in Greek it came to be used for a long "e" sound; the "h" sound being indicated by a fragment of the letter, which later was reduced to the aspiration mark. In Germanic it was used for the voiceless breath sound when at the beginning of words, and in the middle or at the end of words for the rough guttural sound, which later came to be written -gh. The sound became totally silent in Vulgar Latin and in the languages that emerged from it; thus the letter was omitted in Old French and Italian, but it was restored pedantically in French and Middle English spelling, and often later in English pronunciation. Thus Modern English has words ultimately from Latin with missing -h- (able, from Latin habile); with a silent -h- (heir, hour); with a formerly silent -h- now often vocalized (humble, humor, herb); and even a few with an excrescent -h- fitted in confusion to words that never had one (hostage, hermit). Relics of the formerly unvoiced -h- persist in pedantic insistence on an historical (object) and in obsolete mine host. The pronunciation "aitch" was in Old French (ache "name of the letter H"), and is from a presumed Late Latin *accha (compare Italian effe, elle, emme), with the central sound approximating the rough, guttural value of the letter in Germanic. In earlier Latin the letter was called ha. The use in digraphs (as in -sh-, -th-) goes back to the ancient Greek alphabet, which used it in -ph-, -th-, -kh- until -H- took on the value of a long "e" and the digraphs acquired their own characters. The letter passed into Roman use before this evolution, and thus retained there more of its original Semitic value.
1. When we talk about orbitals in multi-electron atoms, they're actually lower in energy than the corresponding H atom orbitals.
当我们讨论多电子原子的轨道时，它们的能量实际上比对应的氢原子轨道要低。
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2. Note that this means, unlike vowels, intervening H and W characters do not act as a barrier to combining runs of letters with the same code.
请注意：这意味着，与元音不同同，插在中间的字符H和W不会对组合相同代码的字母形成障碍。
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3. The 'h' in honest is silent, as in 'hour'.
honest中的h与hour中的h一样都不发音。
《牛津词典》
4. His rejection of our values is far more complete than that of D. H. Lawrence.
他对于我们价值观的摈弃远比D. H.劳伦斯更彻底。
《柯林斯英汉双解大词典》
5. H has also drawn attention because his life story speaks of belief.
他引人注目的另一个原因是，他的人生故事表明了信仰。
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6. By 2020, the trains will run 180 km/h faster than at present.
到2020年，高铁的运行速度将比目前快180公里/小时。
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7. Its speed is 120 km/h, having more stops than the T trains.
它的速度是每小时120公里，比直达快车有更多的站点。
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8. It can run at the speed of up to 50 km/h on the tracks.
它在轨道上运行的速度能达到每小时50公里。
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9. How many kinds of trains are there whose speed reaches 250 km/h and above?
时速达到250公里以上的火车有多少种？
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10. If there were no windows, I wouldn't be able to tell when we were stopped or when we were traveling at 300 km/h.
如果没有窗户，我无法察觉什么时候停车，什么时候我们在以300公里每小时的速度前进。
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11. The designed top speed is 250km/h. These trains have been widely used for main city, such as Beijing, Shanghai, Suzhou and Shenzhen, Guangzhou.
设计的最高时速是250公里。这些列车已被广泛应用于大城市，如北京、上海、苏州、深圳和广州。
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12. This is the fastest EMU train running for long distances in China, the top speed of which could reach 350km/h. Currently, the G train could finish the 1068 kilometer Wuhan Guangzhou High-Speed Railway in 3 hours.
这是中国长距离运行的最快 EMU 列车，其最高速度可达350公里/小时。目前，G 型列车可以在3小时内跑完1068公里的武广高铁。
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13. Another is to prevent the spread of H.
另一个是防止H 病毒的传播。
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14. No, just a bit more complicated-it's M-A-U-G-H-A-N.
不，只是稍微复杂一点，是 M-A-U-G-H-A-N。
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15. When one H-bot headed for danger, the robot successfully pushed it out of the way.
当一个 H-bot 面临危险时，机器人成功地将其推开。
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16. The 4-H girls planted trees and took care of them during the early stages of growth.
“4-H 俱乐部”的女孩们参与植树，并在树木生长的初期照顾它们。
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17. Agricultural employers complain about the H-2A visa for its slow granting procedures.
农场雇主抱怨H-2A签证审批程序缓慢。
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18. T. H. Breen argued that the consumer boycott was a brilliantly original American invention.
T.H.Breen认为，消费者抵制运动是美国的一项杰出发明。
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19. In March, a report revealed that H&M was struggling with $4.3 billion worth of unsold stock.
今年3月，一份报告显示，H&M 因价值43亿美元的滞销存货而倍感纠结。
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20. What's more, China is working on the new high speed trains with the highest speed of 400km/h.
更重要的是，中国正在研制最高时速400公里的新型高速列车。
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21. Farmington, Utah, is a more pleasant community since a local girls' 4-H club improved Main Street.
自从当地的一个女生 4-H俱乐部改善了主街的状况，犹他州的法明顿成为一个更加宜人的社区。
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22. In October last year, a Danish TV show exposed H&M for burning 12 tonnes of unsold clothing since 2013.
去年10月，一档丹麦电视节目曝光了H&M 自2013年以来共焚烧了12吨未售出的服装。
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23. It includes alternative schools with students selected by lottery, such as H-B Woodlawn in Arlington, Va.
它包括学生通过抽签来选择的其他学校，比如弗吉尼亚州阿灵顿市的 H-B 伍德罗恩高中。
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24. And it includes alternative schools with students selected by lottery, such as H-B Woodlawn in Arlington, Va.
它还包括学生是通过抽签来选择的其他学校，比如弗吉尼亚州阿灵顿市的 H-B 伍德罗恩高中。
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25. Abbot H. Thayer has suggested that this gradation obliterates the appearance of solidity, which is due to shadow.
Abbot H。Thayer 曾提出，这种渐变抹杀了因为影子而导致的实体性的外观。
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26. A roboticist at the Bristol Robotics Laboratory programmed a robot to save human proxies called "H-bots" from danger.
一位布里斯托机器人实验室的机器人专家设计让机器人将名为“人机者”的人类替身救出险境。
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27. The H-2A visa has no numerical cap, unlike the H-2B visa for nonagricultural work, which is limited to 66,000 a year.
与非农业工作的 H-2B签证（每年上限为是6.6万个）不同，H-2A 签证没有数量限制。
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28. As a result, farms have grown increasingly reliant on temporary guest workers using the H-2A visa to fill the gaps in the workforce.
因此，农场越来越依赖使用H-2A签证的临时外籍劳工来填补劳动力缺口。
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29. As a result, farms have grown increasingly reliant on temporary guest workers using the H-2A visa to fill the gaps in the workforce.
因此，农场越来越依赖使用H-2A签证的临时工来填补劳动力缺口。
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30. City officials cooperated with the 4-H members in planting trees, building cooking facilities, pick-me tables, swings and public rest rooms.
市政府官员与四健会成员合作种树、建造烹饪设施、自选桌子、秋千和公共卫生间。
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H
