3）内部保温的管道（用绝热材料衬里）的翻译：3) internal thermal insulation of piping (with insulation lining) 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

3) internal heat pipe (lined with insulating material)

3) internal thermal insulation of piping (with insulation lining)

正在翻译，请等待...

3) internal heat insulation materials used for the piping (Liner)

3) internal thermal insulation of piping (with insulation lining)