介紹某冷庫氨制冷系統不停產大修時采用的低壓循環貯液器替代法. Introduces the low pressure circulation receiver substitution method for the no - stop production repair of cold storage.
某些脈沖星發送脈沖比地球上最精確的時鐘都準時。Some pulsars keep time better than the earth's most accurate clocks.脈沖通常以微秒計。The pulse is usually timed in micro-seconds.光化學反應使光變為電脈沖。The photochemical reactions transform the light into elect...
The carpet was a wedding present from the Prime Minister.這張地毯是首相送的結婚禮物。It is not possible to reposition the carpet without damaging it.想要挪動地毯又不讓它損壞是不可能的。While the water was heating she decided to shake out the carpet.趁著燒...