protective coat

基本解释

Anthrax is a colorless, odorless, tasteless bacterium that protects itself from sunlight, heat and disinfectant by forming a protective coat.
炭疽热是一种无色、无味的细菌。
The charcoal works have a different weight, partly due to the black colour, but also because they have a slightly watery sheen from the protective coat of resin, and due to their simple organic forms.
木炭作品的重量不一样，一部分是由于黑色的缘故，但是也因为它们有一层保护性的树脂发出轻微的水样光辉，并且也由于它们简单的有机式样。
Flat and long-distance mining was used to mine underlying low burst coal protective coat, which released the pressure of 13-1 coal bed.
介绍了潘一矿采用近水平远距离开采下伏弱突出煤层保护层，达到对突出煤层13—1的卸压；