rebound tester

例句：

1. 1. The reboundtester was used to measure the bounceof the ball.
   反弹测试器用于测量球的弹跳。
2. 2. The rebound testerhelped us to determine the effectiveness of ournew product.
   反弹测试器帮助我们确定了新产品的有效性。
3. 3. The rebound tester was avaluable tool for testing the durability of materials.
   反弹测试器是测试材料耐用性的一个宝贵工具。