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接头
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接头
用以连接不同尺寸、不同螺纹类型钻杆的连接部件。又称转换接头、配合接头。
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polyribosome; polysome
polyringoid
polyrotaxane
polyrotaxene
polysaccharide
polysaccharides producing microorganism
polysalt
polysaprobic zone
polyseme
polysemous term
polysemy
polysialic acid
polysialic acid (PSA)
polysilane
polysilazane
polysilicate
polysilicon
polysilicone
polysilicon thin film transistor
polysiloxane
polysiloxane-based thermoplastic elastomer
polysleeve
polyslip
polysome
polysomic inheritance
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