1. Urinary calculus is a common disease in the urinary system, including calculus of the kidney, ureteral calculus, vesical calculus &urethral calculus. 泌尿系统结石是泌尿系统常见的疾病，包括肾结石，膀胱结石，输尿管结石，尿道结石，其发病有明显地区性。
2. Canine Urinary calculi , also called urinary calculus, was the joint name of Renal calculus; ureteral calculus and vesical calculus. 犬尿石症又称尿路结石，是肾结石、输尿管结石、膀胱结石和尿道结石的统称。
3. ResultsIn vitro, YGLDG solution could increase the litholytic effect on human bile pigment calculus, cholesterol calculus and combined calculus. 结果养肝利胆颗粒体外能溶解胆色素型、胆固醇型和混合型结石；
4. With each passing infinitesimal time interval another infinitesimal layer is added to the region within which the magnetic field exists. 随着每一个无限小的时间间隔另一个微层被添加到一个区域内，磁场就存在于这个区域内。
5. According to the principles of infinitesimal calculus, a new method on how to ratiocinate the arbitrary quadrilaterals area was put forward. 利用微积分原理给出任意四边形面积公式推证的一种新方法。
