MethodsGene forward mutation method and micronuclei formation test were used to test the effects on the initiation of carcinogenesis;

方法用基因正向突变和周期阻断法微核实验作为启动阶段指标；

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Analyzes the factors that influence the stretching changing in the hoisting process and put forward a method that adopting S-curve could reduce the stretching mutation.

分析了提升过程中钢丝绳张力变化的影响因素，提出了采用S曲线速度图是可以减小张力突变的一种方法。

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Analyzes the factors that influence the stretching changing in the hoisting process and put forward a method that adopting S-curve could reduce the stretching mutation.

分析了提升过程中钢丝绳张力变化的影响因素，提出了采用S曲线速度图是可以减小张力突变的一种方法。

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