Open-loop unstable system with time delay is difficult to control using routine control methods.

开环不稳定时滞系统是工业现场中常见的一类被控过程，这类系统控制难度高，控制精度难以保证。

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Normally it is difficult to obtain a satisfactory result of control by routine control method because there are many deciding factors of coaling.

因为决定喂煤量的因素很多，按照常规的控制方法很难达到满意的控制效果。

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Finally, this essay anal sizes the evaluation result of CSD in four aspects which includes inner-scores reliability test, validity test, routine control chart and gray cognate analysis.

最后，对顾客满意度测评从信度检验、效度检验、常规控制图及灰色关联分析四个方面进行了探讨。

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It goes on to say that although the precise mechanism by which the food came to be contaminated cannot be established, "the outbreak revealed a failure of routine hazard control systems within the kitchen".

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It was a fantastic play, yet the rookie seemed so under control he made it look almost routine.

WSJ: Mets catch up to McCutchen, beat Pirates 3-2

The more people get used to carrying guns as routine, the more they will react to gun-control laws as though someone were trying to steal their cell phones or their watches.

ECONOMIST: Freedom, guns and women