helium group

与helium group相关的网络例句 [注：此内容来源于网络，仅供参考]

Any of the chemically inert gaseous elements of the helium group (group 8A or 0 of the periodic table).

元素周期表中氦族中任何在化学上具有惰性的气体元素。

Besides the foam egg cartons and green-capped water bottles, what astonished me was how much of the trash my group found was helium balloons.

除了用泡沫材料制成的蛋盒和绿色瓶盖的水瓶外，最让我大吃一惊的是，我的团队所发现的垃圾，最多的居然是氦气球。