People usually prove the reliability of products by means of sample test, which needs a lot of samples and is not always applicable in engineering.
常用抽样检验的方法进行产品可靠性验证，根据这一方法所确定的验证试验方案，在一定的风险下所需样本量较大，有时在工程上是不可接受的。
The sample machine transmits test channel and protection one simultaneously and reaches high precision of test level 0.2, which implements ECT's theoretic advantages in engineering.
该样机对测量通道和保护通道合并传输，达到了测量级0.2的高精度，使电子式电流互感器的理论优势得以工程体现。
The sample machine transmits test channel and protection one simultaneously and reaches high precision of test level 0.2, which implements ECT's theoretic advantages in engineering.
该样机对测量通道和保护通道合并传输，达到了测量级0.2的高精度，使电子式电流互感器的理论优势得以工程体现。
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