mineraloid

常见例句

• The bentonite is one kind of very important nonmetallic clay mineraloid,our country bentoniteoreres our cesisextremely rich,there servesis only inferiorin USoccupies second In the world.
  膨润土是一种很重要的非金属矿物,我国膨润土矿资源十分丰富,储量仅次于美国居世界第二位。
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