文中提出的螺旋运动方程对闭式运动链，即空间机构同样适用。
The screw motion equation presented is also suitable for closed chains, i. e. spatial mechanisms.
目的评价64层螺旋CT联合平板运动试验对冠心病的诊断价值。
Objective To explore the diagnostic performance of 64-slice spiral ct combined with exercise treadmill test for coronary artery disease.
从理论上对信盒在螺旋滑道中的运动进行了分析，提出了螺旋滑道各设计参数间的条件公式，并绘出了参数曲线。
It gives a theoretical analysis to the motion of mail case in spiral slide, presents conditional formulas among the designing parameters of spiral slide, and draws parameter curves.
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