When gardens are planted directly on the roof, a waterproof membrane is laid down first, followed by insulation and a root barrier.
当花园直接种植在屋顶上，防水膜放在最下层，其次是隔热和根障。
2
About the sound insulation effect, PC board is internationally recognized as the first selection of highway noise barrier material, it can even 40 decibels of sound insulation.
关于隔音作用来说，PC板是国际上公认的高速公路隔音屏障的首选资料，它乃至能够绝缘40分贝的音响。
3
The walls of the cabin, which is heated only with a wood-burning stove, also contain a vapor barrier, a 6-inch structural wood frame with wood-fiber insulation, and a wood-fiber windproof plate.