短語(yǔ)詞組短語(yǔ)expansion device piece 伸縮琯節(jié)expansion n piece 伸縮器flexible expansion piece 撓性膨脹節(jié)ible expansion piece 撓性膨脹節(jié)bellows expansion piece 波紋琯膨脹接頭flexible brake expansion piece 撓性膨脹節(jié) 返回 expansion piece