helium

简写符号：

简写符号: He

更多词形：

简写符号: He |

单词例句：

Atoms of hydrogen are fused to make helium.

氢原子可熔合成氦。

The antimatter equivalent of helium.

反氦与氦等价的反物质

Helium and neon measurements provide further evidence that the earth was not completely melted.

氦和氖的测定，提供了更多的关于地球并非全部熔融的证据。

The release of hydrogen and helium from coal universally exists.

煤中普遍存在着氢气氦气的释放。

Most big balloons are now filled with helium.

现在许多大气球中充的是氦气。

The atmospheric helium isotope ratio: Is it changing?

大气氦同位素比率在变化吗?

He plans to circumnavigate the world in a helium balloon.

他计画搭乘氦气球环绕世界一周。

If we have reached the Helium pressure the time T18 starts.

如果我们达到了氦气压力，时间T18就开始了。

Note that sonication was less effective than either helium or vacuum treatment.

注意超声比通氦或者真空处理的效果要差。