水轮机金属蜗壳安装焊接工艺导则.Technological guide for assemble and welding of metal sporal case of turbine.探讨人工耳蜗植入术的有关问题.Objective To explore the problems related to cochlear implantation.泵壳多做成蜗壳形, 故又称蜗壳.Pump Volute - shaped shell ma...
他穿着他最干净的便裤，洁净的衬衫和藏青色上装。He wore his cleanest slacks, a clean shirt and a navy blazer.我钻到崭新洁净的被单底下。I slipped between the crisp clean sheets.他用他那块洁净的手帕擦手指.He wiped his fingers on his pristine handkerchief....