helium gas
短語詞組
- helium cover gas system 氦氣覆蓋系統(tǒng)
- helium group gas [化學(xué)]氦族氣體
- helium natural gas 氦氣藏
- helium m gas 氦氣
- helium coolant gas temperature 氦氣冷卻劑溫度
- rich helium natural gas 富氦天然氣
- non -helium shielding gas mixture 無氦混合氣體
- helium gas compressor 氦壓縮機(jī)
- helium gas circulator 氦氣風(fēng)機(jī) 返回 helium gas