variable-frequency vibration test

例句：

1. 1.This test is designed to evaluate the performance of the new device.
   这项测试旨在评估新设备的性能。
2. 2.The variable-frequency vibration test is crucial for ensuring the safety of the equipment.
   可变频率振动测试对于确保设备的安全性至关重要。
3. 3.During the testing process, we observed that the variable-frequency vibration test could detect some minor defects in the product.
   在测试过程中，我们发现可变频率振动测试可以检测出产品中的一些微小缺陷。