knock testing

例句：

1. 1. The engineer performed a knocktesting on the new machine before it wasreleased.
   工程师在这款新机器发布前进行了敲击测试。
2. 2. During the manufacturing process,the quality control team conducts knock testingto ensure the product meets standards.
   在生产过程中，质量控制团队进行敲击测试，以确保产品符合标准。
3. 3. The manufacturer conducted a knocktesting to identify any potential issues with theproduct.
   制造商进行了敲击测试，以识别产品的潜在问题。