variable bias可变偏压variableadj.可变的；易变的n.变量；易变的东西variable order-quantity system可变订货量系统variable temperature measurement变温测量variable mutual conductance tube变互导管variable specific impulse rocket变比冲发动机variable-inductance transducer变感换能器Variable-Area Bypass Injectors可变区域分流注射器variable information rate system可变信息率系统Variable - frequency converter变频器variable-reluctance microphone变磁阻微音器variable reactance transformator可变电抗变压器