Using smooth guides,spring oscillator and high brightness LED,a simple method of demonstrating Lissajous figure is introduced.
介绍了利用光滑导轨、弹簧振子、高亮发光二极管演示李萨如图形的方法。
Ultra-election super-slip guide wire joint endoscopic nosalbiliary drainage in prevention of post ERCP pancreatitis and hyperamylasemia;
超滑导丝超选联合鼻胆管引流预防ERCP术后胰腺炎及高淀粉酶血症