photonegative
/ˌfəutə'neɡətiv/ /ˈfotoˈnɛɡətɪv/
n. 
趋
性
趋性photonegative effect
n. 
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bunton, buntons, bunya, bunya-bunya, Bunyan, Bunyanesque, bunyip, buoy, buoyage, buoyance,
相似单词
photon, photonasty, photoncia, photon-counting, photone, photonegative, photonephelometer, photoneutrino, photoneutron, photonic,