half-round drill 半圆钻 ; 勺钻
unthreaded round drill 无螺纹钻头
round drill rod 圆形钻杆
round drill 半圆钻 ; 球钻
round-shot drill 弹丸钻井
drill l round 炮眼组
half round drill 半圆钻
European peasants would insert a wooden drill in a round hole and rotate it briskly between their palms.
欧洲的农夫将一个木钻子放入一个圆孔并用手掌不停旋转它。
The army engineers paraded round drill squares.
工兵绕训练场列队行进。
Shoe of small crew cut, grey dacron drill, round day, black in rubicund face bestrewed furrow, person of 58 years old has 779 years old however it seems that.
小平头、灰涤卡、圆日鞋,黑里透红的脸庞布满了皱纹,58岁的人看起来却有七八十岁。
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