certified test block

例句：

1. 1.The certified test block is used to verify the accuracy of the device's performance.
   认证测试块用于验证设备性能的准确性。
2. 2.The engineers used the certified test block to test the new software.
   工程师们使用认证测试块来测试新软件。
3. 3. The certification process involves testing the test block for compliance with industry standards.
   认证过程涉及测试测试块以符合行业标准。