balance law平衡律balancen.平衡；天平；平静；结余；差额；调和；制衡vt.权衡；使平衡；抵消；称重量vi.均衡；建立平衡Balance between channels通道平衡Balanced Magnetic Switch平衡磁开关balanced-armature unit[电] 平衡电枢单位balance of foreign debts影响因素balanced system of force平衡力系balance electric current平衡电流balance of contradiction矛盾制衡Balance of Soil Pressure土压平衡balance beam engine pump发动机平衡杆泵balanced beam type relay平衡杆式继电器