union tee
plural of black advance
(nautical) A person whose job involves activities (such as mooring) on deck
A tee pipe fitting with female connections on all three ends.
plural of reclamation
配管工は設置前に、三方すべてがメス接続になっている配管用のT字継手を点検し、内部が清潔で漏れがないことを確認した。
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