oil tank hatch 油舱舱口 ; 油舱舱口油舱口 ; 油舱口
tank dip hatch 油罐量油孔
fuel tank removal hatch 燃油柜取出舱口
BALLAST TANK ACCESS HATCH 压载水舱通道
TANK CLEANING HATCH 清洗舱舱口 ; 洗舱舱口盖
Gauge hatch of tank roof 罐顶量油孔
Moving as if I were in race, I got the hatch open, the cap off, the card scanned, and the nozzle in the tank within seconds.
移动，就好像我在比赛，我把舱口打开，帽子摘下，卡扫描，并在几秒钟内罐喷嘴。
This article introduces a new type of dip hatch for inner floating roof tank, which can avoid the problem of inconvenient handle in current dip hatch.
介绍一种新的内浮顶油罐计量口，它克服了现行计量口操作不便的缺点。
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