短語(yǔ)詞組短語(yǔ)bellows pressure seal 波紋琯壓力密封bellows mechanical seal 波紋琯機(jī)械密封Bellows -seal combination 前軸封bellows s seal 波形密封metal bellows mechanical seal [機(jī)]金屬波紋琯機(jī)械密封bellows s seal gland 伸縮箱式封蓋l bellows mechanical seal 金屬波紋琯機(jī)械密封bellows expansion seal 伸縮膨脹密封Meatl bellows mechanical seal 金屬波紋琯機(jī)械密封件 返回 bellows seal