显然，如果每个工作单元都相当于单个字符串方法调用的两倍、十倍或一百倍，那么所花费的线程开销比例就相应地更小了。
Obviously, if each unit of work were two, or ten, or one hundred times as large as a single string method call, then the proportion of time spent in thread overhead would be correspondingly small.
大部分项目的开销相对于产品开销比例一般是10：1，如果项目周期长的话比例会更大，即使是短期项目也至少是4：1或5：1。
Most projects its around 10 to 1 or greater over a long programme and at least 4 or 5 to 1 on short engagements.
业绩评级得分最初只看机构经费开销占所募资金的比例。
These scores originally looked simply at overheads as a percentage of money raised.
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