The USITT standard, while the DE facto industry standard, was not formally recognized by the international standards community.
虽然USITT标准是事实上的行业标准，但是它没有被国际标准化组织所认可。
The USITT standard, while the DE facto industry standard, was not formally recognized by the international standards community.
虽然USITT标准是事实上的行业标准，但是它没有被国际标准化组织所认可。
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