中文摘要：

文章中考虑了仪器本身辐射喇叭的强度矢量方向与接收喇叭的接收方向存在一定的夹角,从而改进了实验方法,推导出旋转角度与测量值之间的关系,大大减小了原仪器与操作方法的相对误差,精确的验证了马吕斯定律,有助于开拓学生的思维,培养学生的质疑能力,进而提高学生的创新能力。

英文摘要：

Considering the included angle between the direction of intensity vector for radiation trumpet and the direction of reception, experimental methods was improved. The investigation deducted the relationship between rotation angle and measured value. Thus relative error attributing to the equipment and operation was greatly reduced,and Malus law was verified exactly ,which would be helpful to cultivate the students＇ ability of thinking and query together with innovations.