The physical and mechanical interaction of groundwater soil rock mass in karst collapse evolution is discussed elaborately and a coupling mode is established and studied.
分析了岩溶塌陷演化过程中物理力学上的水土岩相互作用，并对作用模式进行了探讨。
Especially for handhelds, close collaboration among interaction designers, industrial designers, programmers, and mechanical engineers is a real necessity.
特别是对于手持设备，交互设计者、工业设计者、程序员和机械工程师的紧密的合作是必需的。
Motors have electrical energy supplied to their windings and a magnetic field that develops an electromagnetic interaction to produce mechanical energy or torque.
电能供给电动机绕组和磁场，产生电磁感应作用，试电动机产生机械能或者转矩。
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