一、平衡条件及其基本特征通常所说的“平衡”是指受到共点力作用的物体的“平动”运动形式的平衡．而所谓的“平动”运动形式达到平衡状态，又是指物体处于“静止”或“匀速直线运动”状态．这两种特殊状态的共同特征是：描述运动状态的速度保持恒定．考虑到物体受到的外... 1. Balanced conditions and their basic characteristics Generally referred to as “balance” refers to the balance of the “translational” movement of objects that are subjected to a common point force. The so-called “translational” movement form reaches equilibrium, which means that the object is in a “quiet” or “uniformly linear motion” state. The common feature of these two special states is that the speed that describes the state of movement remains constant. Considering that the object is outside...