翻译问题

1.Apart from statistical tasks, their time is spent on ensuring consistent application of Six Sigma across various functions and departments.
2.As a result, the number of sigmas that will fit between the process mean and the nearest specification limit is likely to drop over time, 这里的fit要怎么翻译才对阿
3.According to this idea, a process that fits six sigmas between the process mean and the nearest specification limit in a short-term study will in the long term only fit 4.5 sigmas
我实在是翻译不好了，翻译出来总是感觉句子不通顺，只好求助个位帮忙了，谢谢了！