如何科学地对实体混凝土强度进行合格性评定是我国工程质量评价理论中的一项空白。
There is no record about how to review solid concrete strength's eligibility scientifically in China.
以合格评定程序为代表的技术性贸易壁垒已经成为国际贸易中非关税壁垒的主要形式之一。
Technical barriers to trade, with conformity assessment procedures as the representative, have become the main form of non-tariff barriers in international trade.
以合格评定程序为代表的技术性贸易壁垒已经成为国际贸易中非关税壁垒的主要形式之一。
Technical barriers to trade, with conformity assessment procedures as the representative, have become the main form of non-tariff barriers in international trade.
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