Most testing for certification is done according to protocols that are part of the NSF International Standards.

测试对于证明做根据是美国国家科学基金会国际标准的一部分的协议。

youdao

Most testing for certification is done according to protocols that are part of the NSF International Standards.

测试对于证明做根据是美国国家科学基金会国际标准的一部分的协议。

youdao