B 開頭單詞

by reference 通過引用

by rectum [醫(yī)藥科學]直腸灌注

by reason that adv. 因為

by reason of 由于；因為

by reading the textbook 通過閱讀教科書 通過閱讀課本

by rail over frontier [經(jīng)濟學]經(jīng)鐵路運到邊界交貨

by rail 由鐵路，乘火車

by radio 用無線電

by public tender [法學]通過公開招標

by projection [交通運輸工程]依照平面海圖的航法

by profession 在職業(yè)上；就職業(yè)來說

by product workshop [經(jīng)濟學]副產(chǎn)品車間

by product sales [經(jīng)濟學]副產(chǎn)品銷售

by product precipitation [物理學]副產(chǎn)品沉淀

by product power [能源科學技術]副產(chǎn)品電力

by product n.副產(chǎn)品；副作用

by priority 按優(yōu)先級

by pressed for 缺少，缺乏

by preference 首先 最好

by practice 通過實踐