单词	beam-diver-gence--angle
释义	angle， beam-diver-gence射柱发散角
随便看	secondary radioisotope secondary--radioisotope secondary rainbow secondary rakers secondary rate secondary rating adjustment secondary rays secondary reaction secondary reaction zone secondary reactor secondary recipient secondary record secondary record format secondary recoverable oil secondary recovery secondary recrystallization secondary reference secondary reference material secondary reference material {= secondary rm} secondary reference solar cell secondary reference standard secondary reference standard material secondary reference tape secondary reflection secondary refraction