53.the location of discharge valve operating handle for ballast system is incorrect. Valve shaft to be of upwards for convenience.
压载系统排放阀操纵杆位置不对,阀杆应向上以便操作。
单词 | valve shaft |
例句 |
原声例句
航海英语听力 53.the location of discharge valve operating handle for ballast system is incorrect. Valve shaft to be of upwards for convenience. 压载系统排放阀操纵杆位置不对,阀杆应向上以便操作。 |
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