单词	光学字符
释义	光学字符optical character
随便看	pulse position modulation pulse-position modulation pulse position modulation (ppm) pulse position modulation {=ppm} pulse position modulation{=ppm} pulse-position modulation{=ppm} pulse position modulation，ppm pulse, potential pulse-- potential pulse-potential method pulse power pulse power systems pulse power systems, switches pulse preshoot pulse pressure pulse, prompt pulse propagation pulse propagation and solitons pulse propagation in optical fiber pulser pulse radar pulse radiation pulse radiation--source pulse radiolysis pulse ranging