Sacrificial layer process was proposed to protect the non-machined surface in this work and an experimental system was developed to shape overlay welded TC4 blades.

提出了牺牲层工艺保护非加工面，并建立实验系统，对堆焊修复后的TC4叶片进行电解修型。

youdao

Dipping into design notes from The Nokia Lumia line, the One X is a unibody device machined from white polycarbonate that uses Gorilla Glass to protect its 4.7-inch 1280x720 non- pentile Super LCD 2 display.

ENGADGET: HTC One X announced at MWC 2012 Mobile