Natural fabrics like silk and wool are better insulators than synthetics.丝绸和羊毛之类的纯天然织物比合成纤维的保暖性更好。To reduce heat losses the pipes are covered by thermal insulators.为了减少热散失,管子外包保温层.Crystals may be insulators, semiconducto...
Crystals may be insulators, semiconductors, or conductors.晶体可以是绝缘体, 半导体, 或导体.Natural fabrics like silk and wool are better insulators than synthetics.丝绸和羊毛之类的纯天然织物比合成纤维的保暖性更好。Polluted insulators may flashover at any time...
Advantage: good adhesion and maintenance , keep warm , heat insolation, stable and endurable.具有接着力、保持力强、减震性佳及固定 、 保温、隔热作用等优点.The insolation here is abundant , and the forest - free days are about 209 days every year.年平均降...