One kind of decomposable plastic film and protective film of high wet food is attained. 从而得到可用于高湿食品保护膜或作为可降解塑料膜。
There is a protective coating of silicon dioxide on the silicon carbide. 在棒的表面有一层二氧化硅保护涂层。
Stress concentrations can be created by mechanical damage that compromises the protective finishes and alters the compressive shot-peen layer. 机加工损伤对保护涂层的破坏和对喷丸压缩层的改变会造成应力腐蚀。
