施加给比自己密度小的物体的向上作用的力。
The upward force that a fluid exerts on an object less dense than itself.
通常这些荷载是用液压千斤顶直接施加于力的作用。
These loads are normally applied by hydraulic jacks acting directly at the point of application of the force.
其反作用力F’为物块对人施加的力。
The reaction is the force F'exerted by the block on the man.
启闭力和启闭力矩是指阀门开启或关闭所必须施加的作用力或力矩。
Headstock and headstock is the moment to open or close the valve must be imposed by force or torque.
双动的动力缸将施加的油压转换成助动力，作用在齿 条上，加强了驾驶员施加的转向力。
The double-acting steering cylinder converts the applied oil pressure into an assisting force which acts on the rack and which intensifies the steering force exerted by the driver.
基于各种材料的本构关系，导出了多层压电片作用在梁结构上的力和所施加的电压以及结构的运动之间的耦合关系和系统的控制微分方程。
The formula of actuating force produced by multiple piezoelectric patches and the control equations of multi layer beam are derived based on the constitutive relations of different materials.
基于各种材料的本构关系，导出了多层压电片作用在梁结构上的力和所施加的电压以及结构的运动之间的耦合关系和系统的控制微分方程。
The formula of actuating force produced by multiple piezoelectric patches and the control equations of multi layer beam are derived based on the constitutive relations of different materials.
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