市场需要替代传统灭火剂的产品出现.Market needs instead of the traditional fire - extinguishing agent of products.新研制成的灭火剂已经大规模投入生产了.The newly developed extinguisher has been put into mass production.适用灭火剂: 泡沫及粉末灭火剂.Suitable Extinguishing...
Conservationists say the losses could imperil the long - term survival of the creatures.自然保护协会人士认为石油泄露将 长期 威胁海龟的生存.Conservationists in Chile are concerned over the effect of commercial exploitation of forests...对森林的商业开发所...
赞扬是一种很好的信心增强剂。Praise is a great confidence booster.将壳聚糖固体溶于醋酸溶液中,作造纸增强剂.Putting the solid chitosan into ethylic acid solution can potentiator.利用含有吸附基团的结构增强剂与丙烯酰胺等单体共聚,合成了吸水树脂JT-1.Absorbent resin JT - 1 is synthesized by ...