Methods: Take the method of radom and clinical control experiment.

方法：采用随机、临床对照实验方法。

The external vibration usually causes the radom movement of interference fringe.

外界扰动常造成干涉条纹的随机漂移。

Meanwhile the optimization and application of radom variable is illustrated in brief.

同时，对随机变量的优化应用亦做了扼要说明。

Method Twenty six patients with coronary heart disease were divided two groups at radom.

方法随机选择确诊冠心病患者有氧运动锻炼半年作为观察组。

The influences of the light beam drift, the light beam incurve, the light beam radom tremble and etc.

综合考虑了光源漂移、光线弯曲、随机抖动等因素的影响。