单词	被覆石
释义	被覆石armor stone
随便看	pulse-phase modulation pulse phase modulation (ppm) pulse phase modulation{=ppm} pulse-phase modulation{=ppm} pulse phase modulation，pphm pulse-phase system pulse pileup pulse, pile-up pulse--pile-up pulse pileup loss pulse plating pulse-plusd-c pulse pneumatic conveyor pulse, pointed pulse-- pointed pulse polarograph pulse polarography pulse position pulse position indicator pulse position indicator (ppi) pulse position indicator{=ppi} pulse position jitter pulse position modulation pulse-position modulation pulse position modulation (ppm)