• 本文分析机构制动过程基础上推导起升机构下降制动时间制动下滑距离计算公式

    In this paper the calculating formulas of drop braking time and braking slipping distance of hoisting mechanism are deduced on the basis of analysing the braking process of hoisting mechanism.

    youdao

  • 太阳这儿一切看上去大不相同了——所有色彩阴影变了——因此时间她们没有看出大事

    The rising of the sun had made everything look so different - all colours and shadows were changed that for a moment they didn't see the important thing. Then they did.

    youdao

  • 太阳这儿一切看上去大不相同了——所有色彩阴影变了——因此时间她们没有看出大事

    The rising of the sun had made everything look so different - all colours and shadows were changed that for a moment they didn't see the important thing. Then they did.

    youdao

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