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田径、游泳的训练与比赛,体育课的计时测验,都必须使用秒表。据我多年观察,发现有的体育教师,往往不注意开停秒表的正确方法,影响了计取成绩的准确性。 1.正确方法:使用时,在秒表托环上系一根带子,套在脖子上或手腕上,右手拿表,小臂弯曲,手紧贴在侧腰部,用拇指指关节或用食指第二指关节扣住表的开关。若是机械秒表一般都有两道簧,用时则应轻轻压下第一道簧。而有的电子秒表一、二道簧接触很敏感,一定要
Athletics, swimming training and competition, physical education, timing test, must use the stopwatch. According to my years of observation, I found that some PE teachers often do not pay attention to the correct method of stopping and stopping the stopwatch, which affects the accuracy of taking the score. 1. Correct method: When using, tie a strap on the stopwatch ring, put it around your neck or wrist, hold the watch with your right hand, bend your elbows, put your hands on the side of the waist, use the thumb joint or second index finger Knuckles buckle the table switch. If the mechanical stopwatch generally have two spring, the time should gently press the first spring. And some electronic stopwatch one, two spring contact is very sensitive, we must