expansionn.膨胀;扩展;扩充
expansion index膨胀指数
expansion phase膨胀相
expansion screw可调螺钉
expansion force伸张力,膨胀力
expansion space膨胀空隙
expansion anode扩张阳极
expansion bolts膨胀螺栓
expansion brace伸缩拉条
expansion angle宽展角
expansion stock增殖群