作业帮英语翻译翻译出大意也可,In analyzing the toggle vise in the preceding se
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英语翻译
翻译出大意也可,
In analyzing the toggle vise in the preceding section，we assumed that no friction force were involved.thus,the virtual work consisted only of the work of the applied force P and of the reaction but the the work of reaction Q is equal in magnitude and opposite in sign to the work of the force exerted by the vise on the block.Equation(10.5),therefore,expresses that the output work 2Ql cosθ&θis equal to the input work Pl sinθ&θ.A machine in which input and output work are equal is said to be an "ideal" machine.in a "real" machine ,friction forces will always do some work,and the output work will be smaller than the input work.
翻译出大意也可,
In analyzing the toggle vise in the preceding section，we assumed that no friction force were involved.thus,the virtual work consisted only of the work of the applied force P and of the reaction but the the work of reaction Q is equal in magnitude and opposite in sign to the work of the force exerted by the vise on the block.Equation(10.5),therefore,expresses that the output work 2Ql cosθ&θis equal to the input work Pl sinθ&θ.A machine in which input and output work are equal is said to be an "ideal" machine.in a "real" machine ,friction forces will always do some work,and the output work will be smaller than the input work.
在分析曲轴vise前一节中,我们假设没有摩擦力是如此,这个虚拟世界的工作包括只有工作的受力P及反应的问题,但这个工作的反应是平等的在大小和相对于签署的施加压力的block.Equation心花怒放的(10.5),因此,表达了2Ql cosθ&θis输出功等于输入工作Pl sinθ&θ机器的输入和输出工作平等被说成是一个“理想”machine.in一个“真正”的机器,磨擦力总是会做一些工作,并输出工作将小于输入工作.
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