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首頁英語詞典heliumhelium實用場景例句

helium

英 ['hi?l??m] 美['hil??m]

英英釋義實用場景例句

n. [化學(xué)] 氦（符號為He，2號元素）

實用場景例句

Helium is a very light gas.: 氦是一種非常輕的氣體。

Helium is a gas used in balloons.: 氦是一種用于氣球的氣體.

Unlike helium - 4, it cannot be produced by radioactive decay.: 與氦 - 4不同之處是, 氦-3不能由放射性衰變產(chǎn)生.

The helium - 3 apparently became trapped when the earth was formed.: 顯然,當(dāng)?shù)厍蛐纬蓵r,氦 - 3就被圈閉了.

After hydrogen, the atom with the simplest structure is that of helium.: 在氫元素之后, 氦的原子結(jié)構(gòu)最簡單.

Hydrogen might be depleted with some of it turning into helium.: 氫可能被耗盡,一部分變?yōu)楹?

The discovery also explains why helium is found in radioactive mineral deposits.: 這個發(fā)現(xiàn)也解釋了為什么在放射性礦渣中找到了氦.

A fountain of helium spurt out of the tube.: 有一股氦的噴泉從小管中噴出.

Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.: α粒子是從天然放射性蛻變得到的帶正電的氦核.

The bizarre behavior of superfluid helium has attracted many able theorists.: 超流體氦這些異乎尋常的行為吸引了許多有才干的理論物理學(xué)家.

Helium is a noble gas.: 氦氣是惰性氣體.

Helium and neon are inert gases.: 氦和氖為惰性氣體.

Most big balloons are now filled with helium.: 現(xiàn)在許多大氣球中充的是氦氣.

Helium and neon measurements provide further evidence that the earth was not completely melted.: 氦和氖的測定,提供了更多的關(guān)于地球并非全部熔融的證據(jù).

Alpha particles -- helium nuclei -- were being hurled through the tube, in which an artificial mist had been created.: 粒子 —— 氦核 —— 正通過試管被拋出, 從而在試管中形成人造迷霧.