保护屏蔽 meaning in Chinese

guard shield
protection mask
protective screen

Something , such as a protective shield for a machine , that resembles this garment in appearance or function
挡板；拖板箱一些在外表或功能上类似这种服装的东西，如机器上的保护屏蔽物
In order to avoid gas blast because of short circuit , it should popularize shielded mine cable under coal mine . except insulated surface of part products adopting tinnint brass wires and nylon wires , its protective shield adopting conducting rubber and shielded layer which transition resistance not bigger than 3k . the protective layer adopt high machinery chloroprene rubber which is fireproof
为防止电缆相间短路而造成瓦斯气体爆炸，在煤矿井下应大力推广使用屏蔽矿用电缆，除部分产品的绝缘表面采用镀锡铜丝和尼丝交叉纺织之外，其外屏蔽型电缆的保护屏蔽采用导电橡皮及屏蔽层，其屏蔽层的过渡电阻不大于