多次通过各主机厂的质量二方认证，并多次获得“优秀配套厂家”、“免检产品”等称号。

The product quality was passed quality evaluation by the three sides for many times, and awarded "Outstanding Related Producer", "Products Exempting from Inspection", etc.

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纳污量试验符合多次通过方法ISO 16889标准，确定纳污量的压降为初始压降的8倍。

The dirty hold ability test is according to ISO16889 by multi-pass test. The pressure is 8 times than the initial pressure.

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这些数据是通过多次研究收集得来的。

These figures have been gleaned from a number of studies.

《牛津词典》