Ten aryl chloroacetates were synthesized by liquid - liquid phase transfer catalysis.摘要利用液 - 液相转移催化法合成了10种氯乙酸芳酯.Aryl disulfides, for example, inhibit polyolefin oxidation.例如芳基二硫化物可抑制聚烯烃的氧化.The most effective syhthetic co...
The Leicester Swannington Railway is numbered among Britain's railway pioneers.莱斯特—斯旺宁顿铁路被看作是英国最早的铁路之一。Pioneers from the East settled in this region in 1875.1875年,来自东部的拓荒者在这个地区定居下来.A group of young pioneers always a...
流腮病毒可自唾液及尿中分离出来, 患脑膜炎时, 病毒则可来自脑脊髓液.Mumps virus can be isolated from saliva, urine, and, in meningitis, from the cerebrospianal fluid.她接受了 抗 结核药治疗和脑脊髓液引流手术.The patient received anti - tuberculous drug therapy and underwen...