Air tightness test and safety valve adjusting for main air receiver (control air receiver, air horn receiver) on board.
主空气瓶(制空气瓶、笛空气瓶)船后气密试验和安全阀的调整。
On all cylinders ammonia inventory for air tightness test.
对所有库存钢瓶氨气进行气密性测试。
On all cylinders ammonia inventory for air tightness test.
对所有库存钢瓶氨气进行气密性测试。
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