如果冲量为零, 则动量不变.If the impulse is zero, there is no change in momentum.正周相动力冲量的定义可以用类似的式子表示.The positive phase dynamic impulse can be defined by a similar expression.用于碰撞过程的动量定理——冲量定理.The momentum theorem applied to an imp...
Venture capital is characterized by high - risk, high - return and high growth potentiality.风险投资具有高风险 、 高收益、高增长潜力的特点.All of these are quite useful breeds whose potentiality has not been realised.所有这些都是十分有用的品种，其潜力还没有被完全发挥...
This setup consists of a butterfly valve and a rotary electromechanical actuator.这套装置由蝶阀和旋转电动驱动器组成.A new torque identification strategy of valve electric actuator is proposed.提出一种新型阀门电动装置力矩辨识方法.Performance of control sys...