expansionsn.扩展(expansion的复数形式)
expansionn.膨胀;扩展;扩充
expansion drying膨胀干燥,闪蒸干燥
expansion washer伸缩垫片
expansion-lossn.膨胀损失
expansion nozzle扩散形喷管
expansion of gas气体膨胀
expansion factor膨胀系数,溶胀因子
expansion height膨胀高度
expansion bellow膨胀式风箱
expansion mining扩大开采