P-type transistor P型晶体管...A-type steel 甲类钢...p-type silicon p型矽...p-type semiconductor P型半导体...p-type conductor P型导体...b type eraphite B型石墨...a type graphite A型石墨...watch type 监视类型...p-type conductivity P型传导性...p-type crystal rectifier P型晶体整流器...p-type semiconuctor P型半导体...o-type backward-wave oscillator O型反向波振荡器...P-type diffusion P型扩散...w-type engine W形发动机,扇形发动机...a type graphtie A型石墨...eccentric-type vibrator 偏心式振动器...p-type conduction p型导管...Z-type butt joint Z形接头...Jaeger's test-type 耶格氏近距视力[试]标型...Z-type 4-roll calender Z形四滚压延机...G type bacterium G型菌(细菌的可滤过阶段)...
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