A new type gemini surfactant was synthesized from 1,4 - butanediol , maleic anhydride and 1 - octadecanol.采用1,4- 丁二醇 、 马来酸酐及十八醇为主要原料,合成出一种双子表面活性剂1, 4- 丁二醇双琥珀酸十八醇双酯磺酸钠.The catalysis of big pore strong acid resin for 1, 4 ...
Result The celioscope and hysteroscope success rates were both 100 %.结果腹腔镜和宫腔镜的手术成功率100%.Conclusion Hysteroscope operation is the best choice in treating submucous myoma.解论乱疗粘膜上女宫肌瘤,宫腔镜脚术非最好挑选.It and removed by a hystero...
She crept from the bed and fumbled for her dressing gown.她从床上蹑手蹑脚地爬起来，摸索着自己的晨衣。I was shoehorning myself into my skin-tight ball gown.我正拼命把自己塞进我的紧身晚礼服里。Wood was now comfortably enfolded in a woolly dressing-gown.伍德正舒服地穿着件...
Ernest Brown lives about a dozen blocks from where the riots began.欧内斯特·布朗住在离骚乱发生处几个街区远的地方。The high and low-rise apartment blocks built in the 1960s are crumbling.20世纪60年代建造的高低不一的公寓楼群正在逐渐破损坍塌。Two blocks beyond our school...