oil pan level gauge

The reason of setting measure tube and oil facemeter is analyzed,and then perch alarm replaces oil face meter.

本文探讨了公约对于测量管的要求,分析机舱双层底油舱设置测量管的原因,对于机舱双层底哪些油柜需要增设油面计,哪些可以用高位报警代替油面计。