screw motion的用法和樣例：
例句
- Even slight spiraling motion in a square pipe increases the tendency of particles to be maintained in suspension.
水流在方管中稍有一些螺旋運動(dòng)，將增加泥沙懸浮在水中的作用。 - It is the sufficient and necessary condition that the velocities of three non-collinear points in a rigid body can determine a screw motion of the body.
這是物體上非共線(xiàn)三點(diǎn)的速度能確定此物體螺旋運動(dòng)的充分必要條件。
