cover line meaning in Chinese

盖层与煤层接触线

Flexible conductor cover line hoses of insulating material for live working
带电作业用导线软质遮蔽罩
Live working - flexible conductor covers line hoses of insulating material
带电作业.绝缘材料制的软导体套
Live working - flexible conductor covers line hoses of insulating material
带电作业.绝缘材料的柔性导线护套
. 1 live working - flexible conductor covers line hoses of insulating material ; amendment 1
带电作业.绝缘材料制的软导体套
The remote points can be measured conveniently by using this system . there are two communications in the system , rs - 485 and usb . the system can plug and play , and it covers line length up to 1200m
系统把rs - 485与usb两种通讯协议取长补短，利用usb接口的即插即用和热插拔的能力和rs485具有的远距离传输和抗干扰性能好的特点实现系统的高速远距离数字通讯。