Every aspect of the original has been closely studied and painstakingly reconstructed.原作的每一细节都经过了仔细研究,费尽苦心才得以重现.The house fell into disrepair but a group of preservationists have reconstructed the roofs.这座房子年久失修，但一群古建筑保护...
阐述了饲料脱氟磷酸三钙的作用及发展必要性、内外生产技术现状.The action and development necessity of the feed defluorinated tricalcium phosphate were expounded.介绍了湿法磷酸化学法脱氟的脱氟机理和影响脱氟率的多种因素.The mechanisms and some affect factors for chemical disposal d...