As he talked, an airforce jet screamed over the town.他談話時，一架軍用噴氣式飛機在鎮子上空呼嘯而過。Workers at the plant build the F-16 jet fighter.這個工廠的工人建造F-16噴氣式戰斗機。The company laid off 65,000 workers after commercial-jet orders dried up.商務...
During alcoholic fermentation acetaldehyde acts as a hydrogen acceptor instead of oxygen.在這個過程中乙醛取代了氧作為氫的受體.Decanoyl acetaldehyde was extracted from houttuynia cordata thunb by the method of solvent extraction process.利用...