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People can know the types of fluids in pipes by feeling with hands There are series of rings painted in the pipes to show various fluids Engineers should wear cards standing for ranks Engineer knows his own code very well
fire-tubes furnaces down-comers soot-blowers
space limitations prevent separately run pipes the engines are small auxiliary units they are arranged to prevent gas backflow to each engine a waste heat boiler is installed
AC =AR AVC〈AR 或AVC=AR AVC〉AR 或AVC=AR MC=MR
excessive crankcase pressure excessive lube oil temperature contamination of the lube oil by water contamination of the cooling water by lube oil
telescopic pipes large bore drilled passage tied rod
Pneumatic pipes Hydraulic pipes Telescopic pipes Operating gas pipes
e-mail messages. video. text from companies. cable companies.
AC=AR AVC〈AR 或 AVC=AR AVC〉 AR 或 AVC=AR MC=MR
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