Water tanks should be well lagged and the roof well insulated.水箱和屋顶都需要敷设严密的保温层。Are your hot and cold water pipes well insulated?你们的冷热水管包好隔热层了吗？This room is insulated against noise.这个房间隔音....
In order to make it safe, the element is electrically insulated.为安全起见,该元件作了电绝缘处理。Not far away were other geothermal wellheads, their natural pressurized steam deflected into huge insulated pipes.不远处是另几口地热井, 它们的天然加压蒸汽输进了巨...