A brooch fixed to the collar matched her diamond - studded sapphire button earrings.
领口一只别针，与碎钻镶蓝宝石的‘纽扣’耳环成套。
The downhole stabilizer location adjuster, fixed between the bit and the drill collar, is a special tool for continual deviation control of a slant hole.
井下稳定器安放位置调节器是斜井旋转钻井时实施井斜连续控制的专用工具，安装在钻头与钻铤之间。
A brooch fixed to the collar matched her diamond-studded sapphire button earrings.
领口一只别针，与碎钻镶蓝宝石的“纽扣”耳环成套。
A brooch fixed to the collar matched her diamond-studded sapphire button earrings.
领口一只别针，与碎钻镶蓝宝石的“纽扣”耳环成套。
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