Alkyd resins are often modified with other resins to obtain specific properties.多元醇酸树脂通常用其它树脂改性以获得特殊的特性.Chemicals Stocks, Ferroalloy and Products, PVC Resins, Plastic Raw Material, Chemical Supplies.采购产品股票, 铁合金和产品, PVC树脂...
太空望远镜拍摄到了迄今为止最清晰的冥王星的照片。The space telescope has taken the clearest pictures ever of Pluto.观测工作借助于各种望远镜。The observational work is carried out on a range of telescopes.任何借助望远镜瞄准器的像样射手都可以随意把我们逐个干掉。Any decent shot with teles...