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顶部驱动钻井装置
释义
顶部驱动钻井装置
Encyclopedia
工学
钻井装备
释
top drive drilling equipment
顶部驱动钻井装置
动力从井架的顶部直接驱动钻具进行旋转钻进,并能完成多种钻井操作的钻井装置。又称顶驱或顶驱装置。
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seed multiplication of crop
seed nucleus
seed of life
seed orchard
seed pelleter
seed plant
seed polisher
seed pregermination
seed processing machinery
seed production
seed production area
seed production of rapeseed
seed production of rapeseed conventional cultivar
seed production stand
seed rearing
seed rearing of Black grunt ,seed rearing of Hapalogenys nitens
seed rearing of Boleophthalmus pectinirostris
seed rearing of Chanos chanos
seed rearing of Chelon haematocheilus
seed rearing of Chromileptes altivelis
seed rearing of Crassostrea gigas
seed rearing of Crassostrea gigas angulata
seed rearing of Cyclina sinensis
seed rearing of echinodermata
seed rearing of Epinephe lusfuscoguttatus
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