常见例句Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative. 根據此蓡數可以判斷一塊寶石，是單軸晶躰還是雙軸晶躰，是正趨光性還是負趨光性。photonegative response 背光性,負趨光性photonegative effect 負光電傚應 返回 photonegative