Construction equipment in place: excavator, crane, welding machine, Angle grinder, abrasive cut-off machine and any other equipment.

施工机具到位：挖掘机、吊车、焊机、角向磨光机、砂轮切割机及其它工用具。

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This paper assumes the rotational angular velocity of a crane according to the experimental sine rule, and derives the nonlinear differential equations of the swing Angle.

本文以实验为依据，假定起重机的旋转角速度按正弦规律变化，推出货重偏摆角的非线性微分方程。

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The technique was applied to a simulated model of a boom crane slewing at a constant luff Angle while reeling in the cable and linearized around the payload equilibrium position.

传送时间由叠代减到最小技术被申请了于旋转在一个恒定的逆风行驶角度的景气起重机的一个被模仿的模型，当卷在缆绳时并且在酬载平衡位置附近线性化了。

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