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单词 C2H2
释义

C2H2

英语例句库

The uvular r's of French and the fricative, glottal ch's of German (and Scots) are essential to one's imagination of these languages and their speakers.

人们一听到法语的小舌音、摩擦音,或者德语(和苏格兰语)的喉音,就会对语言本身和语言的使用者产生各种想象。

Conclusion Cerebroprotein hydrolysate conta ins abundantly essential amino acid and small molecular peptid to human brain wi ch can inprove functional activation of human brain cells .

脑蛋白水解物富含人脑必须氨基酸及小分子肽,能改善脑细胞功能活性。

原声例句
航海英语听力

26.keep contact with taufig control on vhf ch 06

用VHF 6频道与陶非克港调联系。

大叔教你学初级英语

Maggie, what starts with a sound CH? Oh, chicken! No. Try again.

麦琪,什么东西是以读音CH开头的?哦,chicken(小鸡)! 不对。再猜。

爷爷奶奶的发音课堂

It's mishap. It's an S sound, S, not a CH.

事故。发的是 S 这个音,而不是 CH。

大叔教你学初级英语

CH. CH. Chocolate for me. Yummy. Yummy. Mmm. Oh, I like chocolate.

CH CH,我有巧克力吃了。好吃。好吃。嗯。哦,我喜欢巧克力。

Emma的美味英语

And there's that CH sound again.

还有 CH 这个音。

爷爷奶奶的发音课堂

Yeah. It doesn't start with CH or SH sound.

是的。它不是以 CH 或 SH 的音开头的。

看热点学英语

Normally, when we see c-h it's pronounced 'ch' like cheese.

通常情况,当我们看到 c-h 时,它被发成“ch”,比如在 cheese 中的发音。

大叔教你学初级英语

Are you ready? Listen carefully. The sound you need is CH. What is it?

准备好了吗?仔细听哦。你们需要的读音是CH。是什么呢?

你的英语教练 Stefanie

So tree, we have a strong CH sound there, tree tree tree.

Tree有一个很强的ch音。

跟Lucy学听力

That's because 'tuh' and 'yah' comes together to make a 'ch' sound.

这是因为" tuh" 与" yah" 合在一起变成了" ch" 。

Emma的美味英语

Make sure you're really landing that last consonant sound there, that CH sound.

一定要把最后一个辅音发出来,CH 音。

跟Hadar学美式发音

And then when we connect those two words together, we hear a 'ch' sound.

然后当我们把这两个单词连在一起时,我们会听到一个“ch”音。

和剑桥外教学英语

When the verb ends in CH, SH, X, SS or ZZ, we add ES.

当动词以 CH、SH、X、SS 或 ZZ 结尾时,我们加上 ES。

Emma的美味英语

Pay attention to that CH sound at the beginning of the word.

请注意单词开头的那个CH音。

跟Hadar学美式发音

And a consonant is a sound that stops like k, ch, r, th.

辅音是以 k,ch,r,th 结尾的音。

Max带你学发音

But lots of people say it " you-chube" , so the T becomes a " ch" .

但是很多人把它读成“you-chube”,所以 T 变成了“ch”的发音。

跟Hadar学美式发音

When the tr go together it often sounds like a ch sound instead of a t.

当/tr/连在一起时,它听起来像/ch/而不是/t/。

跟Hadar学美式发音

TR, which turns into a " ch" sound, and then the A as in 'cat'.

TR 变成“ch”音,然后是“cat”中的 A 音。

Engvid超级外教Ronnie-发音

You're going to " chew" . " Ch, ch, ch, chew" .

你要“咀嚼”。 “Ch,ch,ch,咀嚼”。

跟Hadar学美式发音

But when people speak fast, what happens is that these two words connect and turn into a 'ch' sound.

但是当人们说得很快时,这两个词会连接起来,变成“ch”音。

中文百科

乙炔 Acetylene

(重定向自C2H2)

乙炔,俗称风煤电石气电土,是炔烃化合物系列中体积最小的一员,主要作工业用途,特别是烧焊金属方面。

乙炔于1836年由英国科学家艾德蒙·戴维(Edmund Davy)发现,化学式为C2H2,有一个如下图所示的直线型结构:

乙炔在室温下是无色、极易燃的气体。纯乙炔是无臭的,但工业用乙炔由于含有硫化氢、磷化氢等杂质,而有一股大蒜的气味。乙炔的化学能主要贮存于它的三键中。

在摄氏400度以上, 乙炔会聚合生成乙烯基乙炔(C4H4)和苯(C6H6)。在摄氏900度以上则会形成炭黑。

碳酸钙(石灰岩)和煤炭是生产乙炔的主要原料。首先,碳酸钙会转化为氧化钙,煤炭则转化为焦炭。然后氧化钙和焦炭会发生反应形成碳化钙和一氧化碳:

英语百科

Acetylene 乙炔

(重定向自C2H2)

Acetylene (systematic name: ethyne) is the chemical compound with the formula C2H2. It is a hydrocarbon and the simplest alkyne. This colorless gas is widely used as a fuel and a chemical building block. It is unstable in its pure form and thus is usually handled as a solution. Pure acetylene is odorless, but commercial grades usually have a marked odor due to impurities.

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更新时间:2025/6/17 8:25:51