词汇	flat flow
释义	flat flow 扁平流型
随便看	piston gauge weight Piston gauge with equilibrium liquid piston gauge with re-entrant cylinder column piston gearing piston gland piston governor piston governor valve piston governor valve cage piston governor valve retaining spring piston governor valve strainer piston groove piston groove cleaner piston group piston guard ring piston gudgeon pin piston guide piston guide ring piston having ring-shaped inserts pistonhead piston head piston-head piston head cavity piston head end piston head insert piston head plate