英语语法分析

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。