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.

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。

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But the plan over the photos was already in motion in a voice mail that was made public: Malana's voice is clearly heard on the voice mail.

但该计划在过去的照片已经在议案中的一个声音邮件被公诸于众：疟疾的声音清晰可闻上的语音信箱。

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But the plan over the photos was already in motion in a voice mail that was made public: Malana's voice is clearly heard on the voice mail.

但该计划在过去的照片已经在议案中的一个声音邮件被公诸于众：疟疾的声音清晰可闻上的语音信箱。

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