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小鼠洞卡钳
在钻井作业中,方钻杆接卸小鼠洞中钻杆丝扣时,用来卡紧钻杆防止其旋转的装置。
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diary studies
Diary Travelog of Liaodong Area
Diary Travelog of Yalu River Area
DIASC
Dias Charter
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diasolysis
Diaspora
diaspore
diassociative loop
diassociativity
diastereoisomeric excess
diastereoisomerisation
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diastereomeric excess precent
diastereomeric ratio
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diastereoselective synthesis
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diastimeter
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