helium core electrons 氦壳电子
helium-rich core [天物] 富氦核
helium rich core 富氦核
helium core
氦的核心
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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.
ECONOMIST: Extrasolar planets
应用推荐
模块上移
模块下移
不移动