Prices at three-star hotels fell furthest in several northern cities.3星级宾馆的住宿价格在几个北方城市降得最多。The south of England, where prices have fallen furthest, will remain the weakest market.价格下跌得最厉害的英格兰南部仍将是最疲软的市场。The risk of thund...
Objective To observe the safety of diclofenac diethylamine salt gel after external use.目的观察双氯芬酸二乙胺盐凝胶经皮用药的安全性.The aminolignin flocculant was prepared based on calcium lignosulfonate, diethylamine and epichlorohydrin by a...