单词	number recognizing
释义	number recognizing 认数
随便看	photon efficiency photonegative photonegative effect photo negative film photonegative response Photo negatives smudge easily photon-electron interaction photon emission photon emission curve photon emission curve of scintillator photon emission noise photon emission probabilities photon emission spectrum photon emittance photon emitter photon emitters photon extraction efficiency photon factory photon fast packet switching photon field photon flow photon fluctuation photon fluence photon energy photon energy resolution