The rare gas isotope geochemical analyses also support that there is a genetic association between the light rare earth element mineralization and mantle processes.

稀有气体同位素地球化学研究也在一定程度上揭示了牦牛坪轻稀土矿化与地幔过程之间存在着成因关系。

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It also supplies liquid oxygen, liquid nitrogen, acetylene, carbon dioxide, hydrogen, propane, freon, liquid ammonia, and rare element gas.

还兼营液氧、液氮、液氩、乙炔气、二氧化碳、氢气、丙烷气、氟里昂、液氨及其他高纯和稀有气体。

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