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为迅速准确地丈量出立定跳远的成绩，我们县体育教师群策群力，试制了“立定跳远测试工具”，用以测定立定跳远成绩。既准确快速，又透明公正，颇受学生的欢迎，测量效益也很高，具体做法如下：1材料与尺寸，宽7厘米，厚4厘米，长300厘米的木条一根，“T”字型直尺一把。(商?
In order to quickly and accurately measure the performance of standing long jumps, our county PE teachers work together to make a trial of “standing long jump test tools” to determine the standing long jump results. Precise and rapid, but also transparent and fair, very popular with students, measuring the benefits are also high, the specific practices are as follows: 1 materials and dimensions, 7 cm wide, 4 cm thick, 300 cm long piece of wood, Font ruler one. (Business?