捞砂筒底阀
词语: 捞砂筒底阀
解释: bailer dart
词典: 造纸专业汉英词典
捞砂筒底阀 相关解释
bailer dart 〔名词〕捞砂筒下部的活门
bailer dart 〔名词〕捞砂筒底阀
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