for connections to brazed vessels 用于对钎焊容器的连接 for drainage 用于排放 head (see Openings head and shell) 封头(见开孔,封头和壳体) ..
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opening for drainage 排水巷道
openings for drainage 用于排放的开孔
pump station for drainage 排水泵站
Widely Used For Drainage 广泛用于排水
underground channel for drainage 排水盲沟
trocar for drainage 引流穿刺套管针
piping for drainage 排水管道
Clinker for drainage 排水装置用熟料
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