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Terms for subject Ecology containing 管头 | all forms
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压头管线penstock
变径管接头reducing nipple
尽头干管dead-end main
开口接头管open-joint pipe
Y 形瓦管接头wye
支管接头branch connection
滤头管式地下排水管滤头管式底下排水管pipe-and-strainer underdrain
螺纹套管接头screwed socket joint
锁合接头管lock joint pipe