- drag
air drag 空气阻力
drag along 拖着脚走，慢慢地行走
drag out 拖延
frictional drag 摩擦阻力；摩擦拽力
drag link 拉杆
drag
- frictionaladj. 摩擦的,摩擦力的 frictional resistance 摩擦阻力
frictional force 磨擦力
frictional coefficient 摩擦系数
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