结果各种消毒产品的卫生许可批件持有率、生产企业卫生许可证持有率、检验报告合格证持证率的差异较大且均有统计学意义（P <0 0 0 1） ；

Results The license holding rate of sterilized products, of manufacturers, and the certificate holding rate of test reports were greatly different, which was statistically significant(P<0 001).

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尽管美联储尚未购入住房抵押贷款支持证券（MBSs），从公布消息之日起收益率已由5.45%下降到了3.9%。

The Fed has not yet bought any MBSs, but their yields have dropped from 5.45% to 3.9% since it proposed doing so.

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