back-up plate的用法和樣例：
例句
- This article presented a teaching experimental platform on general measurement and selected mating about the roller bearing pretension backup plate.
介紹了一種以滾動(dòng)軸承預緊墊片綜合測量選配為主的教學(xué)實(shí)驗平臺。 - This paper presents a welding machine back of the design, namely a welding torch can be synchronized with the mobile pads car.
本文主要介紹了一種自動(dòng)焊背面成型機的設計，即一種可以實(shí)現跟隨焊槍同步移動(dòng)的墊片小車(chē)。
