Conclusions: IVU and cystoscopy , especially retrograde ureteropyelography, were essential for the diagnosis of primary ureteral carcinoma. 结果: 33例均为移行细胞癌,术前确诊21例,占63.6%.
他为裁军运动和反对核武器扩散而奔走。He campaigned for peace and against the spread of nuclear weapons.原油泄露后的浮油很快在水面上扩散开来。A crude oil slick quickly spreads out over water.有关于分子扩散速度的数据。There are data on the rates of diffusion of molecules....