1·A notional figure of cost helps in determining production costs; speculative knowledge.
概念上的成本数字有助于决定生产成本;理论知识。
2·You can sometimes predict complexity based on speculative knowledge of the problem domain, but writing code creates new constraints and opportunities that are virtually impossible to predict.
有时候可以根据问题域的理论知识预测复杂性,但是在编写代码时,又会产生新的约束和机会,这些实际上是无法预测的。
3·Learn relevant mechanism knowledge and master plenty of speculative knowledge, which will help to analyze the mechanism and provide strong theoretical basis for the failure cause of control choke.
学习相关机理研究,掌握大量的理论知识,指导论文的机理分析,为找出油嘴的失效原因提供有力的理论依据。