词汇	光束发散角
释义	光束发散角医beam-divergence angle
随便看	The Black Mages The blackmailer had a hold over him the black man the black market channel the black morass blasted lands the black mountains The black mourning clothes of a widow the blackness of night The blackout forced us to call it a day The black ox has trod on her foot The black Ox has trod on sb The black ox has trod on sb.'s foot The black ox has trod on someone's foot The Black Panther the Black Panther Party the black people the black pigment of skin the black plague The black plague struck the village the black pope the black prince the black race the black robe the black rock series the blacks