North Korea, Japan, and the U.S. all have sizable

autumnjune · 2018-04-22 09:02:03Z

North Korea, Japan, and the U.S. all have sizable简介

来源: autumnjune 于 2018-04-22 09:02:03 [档案] [博客] [旧帖] [给我悄悄话] 阅读数 : (123 bytes)

回答: 美国有的是稀土，不开发是因为成本比中国高一点。由 cutedolphin 于 2018-04-22 08:36:39

rare earth deposit. However, mining of rare earth is environmentally costly, this is why China led the industry.

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• 所以啊，逼急了哪管环保 -cutedolphin- ♂ (0 bytes) () 04/22/2018 postreply 11:04:44

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