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...
In the formative years their alliance carried all before it.在草创阶段,他们的联盟所向披靡。Parents have the greatest formative effect on their children’s behaviour.父母对孩子的行为有最深远的影响。This paper analyses the formative reason evaluation of ...