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 | ballast system |
释义 |
ballast system
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。 VOA Standard 2013年3月合集 The airship has a rigid structure made of carbon fiber and aluminum, rotating propellers for takeoff and landing, and a ballast system that compresses helium to control the lift. 飞艇具有的坚硬结构由碳纤维和铝组成,旋转螺旋桨用于起飞和着陆, 而一个压载系统则压缩氦来控制升降。 |
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