expansionn.膨胀;扩展;扩充
expansion fog膨胀雾
expansion bed钝化
expansion cam膨胀凸轮
expansion bit伸缩式钻头
expansion pin挤棒
expansion end活动端,可伸缩端
expansionless菌伞展开缺陷突变株
expansion sew伸缩缝
expansion bus扩展总线
expansion fit膨胀配合,冷缩配合