When the float upward force and float suffered gravity, buoyancy and viscous forces of the force equal to three when the float is in equilibrium.
当浮子上升的力与浮子所受的重力、浮力及粘性力三者的合力相等时，浮子处于平衡状态。
When the float upward force and float suffered gravity, buoyancy and viscous forces of the force equal to three when the float is in equilibrium.
当浮子上升的力与浮子所受的重力、浮力及粘性力三者的合力相等时，浮子处于平衡状态。
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