The problems existed in the standard are that the accuracy of capacity table is low, the optical measurement system is directly listed in the standard without any site comparison trial.
存在问题主要表现在容积表精度低、导轨光学径向测量仪没有经过现场对比试验就直接列入规程等。
And here's another interesting statistic - 68% of online purchases begin at a search engine or shopping comparison site.
还有另外一项有趣的统计——68%的在线购买行为是通过搜索引擎和购物比较网站来实现的。
For comparison, search engines account for about 7% of site visits.
与此相比,搜索引擎占了站点访问量的7%左右。
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