balance bar平衡杆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Balanceable expectation平衡期望值balanced pressure torch等压式焊炬balanced budget theorem平衡预算定理balanced phase detector平衡鉴相器balance carried forward余额结转下期balance brought forward结转余额balance characteristics平衡特性balanced rotary armature平衡旋转衔铁balanced-bias detector平衡偏压检波器balanced low pass filter平衡低通滤波器