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组合钻
1、convex combination───[数]凸组合
2、combination───n.结合;组合;联合;[化学]化合
3、drill───vi.钻孔;训练;n.(Drill)人名;(德、英)德里尔;n.训练;钻孔机;钻子;播种机;演习;vt.钻孔;训练;条播
4、drill sizes───钻孔尺寸
5、combination lock───暗码锁;号码锁;n.号码锁
6、combination synonym───组合同义词
7、business combination───[经管]企业合并
8、disk drill───圆盘播种机
9、perfect combination───完美结合
1、has a practical meaning for the strength design and combination usage of drill string, casing and tubing under different technological conditions.───处于不同工艺条件下的钻柱、套管、油管的强度设计和组合使用等均有实际意义。
2、a great combination passing drill that will help focus on combination play and playing diagonal balls.───一个很棒的传切配合训练,重点在于训练队员的配合默契和斜向传接球能力。
3、Stacked near the checkout counters, and as colorful as a Fisher-Price toy, it is a not-so-serious-looking power tool: a battery-operated saw-and-drill combination.───堆在收银台附近,像费雪玩具一样颜色鲜艳的它,是一个看起来不那么严肃的电动工具:一个电池驱动的锯和钻的组合。