例句與造句

1. some relays on the printed circuit board were destroyed under random acceleration excitations . in order to improve the product reliability, the new signal transform device must be designed
   在做隨機振動試驗時，有幾個裝在印制電路板上的繼電器出現(xiàn)損壞現(xiàn)象，為提高產(chǎn)品可靠性，需要重新設計信號變換裝置。
2. finally, the random vibration analysis of the signal transform device is presented . experimental modal analysis is discussed briefly . the reasons why the relays on the printed circuit board were destroyed under random acceleration excitations are found out
   本文最后對信號變換裝置進行了隨機振動響應分析，簡要探討了實驗模態(tài)分析法，找出了裝在印制電路板上的繼電器在隨機振動試驗中被損壞的原因，也介紹了結構動力模型修正技術的發(fā)展。
3. It's difficult to find random acceleration in a sentence. 用random acceleration造句挺難的