比较结果的依据指标主要是人工搜寻和电子搜寻找到的随机临床试验报告的数目。

The main outcome measure was the number of reports of randomized trials identified by handsearching as compared to electronic searching.

youdao

也许用字词的数目来定义长尾关键字是没有用处的，也许使用搜寻量或是竞争性来看会比较好。

So perhaps the number of words isn't useful in defining long tail keywords. Perhaps search volume or competitiveness might be better.

youdao

搜寻条件中所能包括的述词数目没有限制。

There is no limit to the number of predicates that can be included in a search condition.

youdao