氦气层 meaning in English
helium layer
Examples
- Dr marcy suspects that his new discovery , which has about 45 times the mass of the earth , is composed of a rocky core surrounded by a thick envelope of hydrogen and helium gas
马西博士怀疑，他的这个拥有地球质量四十五倍的新发现星体有一个岩层核心构成，并被一层很厚实的氢气与氦气层笼罩。