carbon arc motion picture projector 碳弧灯活动放映机
arc motion 电弧的运动 ; 电弧运动
total arc of motion 术前膝关节活动度
full arc motion 全活动弧度
tangent arc motion 切向弧线位移
arc of motion 平衡弧
arc drawing motion 圆弧往复运动
full arc of motion 全活动蝗
Successive initiation of the arc spots and their jumping motion along a track were observed.
观察到弧斑沿弧迹的产生经过及其眺跃运动。
An arc motion would make people's gaze stick to the curving hand and stay there, while a straight line would make their eyes flick back to the beginning and jump between the two.
弧形移动能使人注视弯曲的手并在移动终止点集中注意力，但直线移动会让人目光闪回起始点，并在两点间移动。
The circular arc automatic door is reciprocating swing, and its motion parameters are the number of swing per minute, the size of the swing Angle and the travel speed ratio coefficient.
圆弧形自动门是往复摆动，其运动参数是每分钟摆动次数、摆角大小和行程速比系数等。
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