结论先行CT脑灌注成像，根据测量值预测脑CTA检查延迟时间是保障CTA检查成功的一种较好的方法。

Conclusion It's a satisfactory method based on successful cerebral CTA study to take the time to peak in CT perfusion as the delay time.

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在第三章中，根据“-(？)(？)”的先行动词和找出了其在汉语中的对应形式。

In the third chapter, according to the advance verb of "(?)", it has discovered it "s corresponding form in Chinese."

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根据机械自动化专业的教学课程系列，设计了课程先行性关系图，说明了课程先行性分析对教学计划制定的意义。

Then a curriculum antecedence chart of Manufacturing and Automation Engineering is provided to illustrate the significance of antecedence research in making teaching plans.

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