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真兽类
释义
真兽类
Encyclopedia
理学
哺乳纲(化石)
释
eutherians
真兽类
哺乳纲中兽类的一大分支,包括有胎盘类动物(placentals),以及在系统演化树上与有胎盘类的亲缘关系比与有袋类(marsupials)的亲缘关系更近的所有动物。
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Drigalski Island
drill
drillable bridge plug
drill barrow
drill bit
drill collar
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drill-core sampling
drill-down
drill-down analysis
driller console
drill floor robot
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drill hole
drill-in fluid
drilling
drilling accident
drilling accident handling
drilling and blasting method
drilling and blasting method of rock engineering
drilling and block
drilling application
drilling assembly
drilling auxiliary appliance
drilling benefit index
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