preliminary work meaning in English

初步工作
前期工作
准备工程
准备工作

This period would, of course, be shortened by any preliminary work and thought .
这个期限当然还可以由事先有所准备和有所考虑而得以缩短。
The importance of preliminary work for construction projects to investment
建设项目前期工作对投资的重要性
Preliminary work in my department in cambridge has already confirmed this optimism
在剑桥我系的预备实验，已经证实了这种乐观主义。
Maintenance - cost model , decision method etc . furthermore , we have done some preliminary work of related evaluation system
对与其相关的评价体系，也做了初步的研究。
It can be quite valuable during preliminary work to " stub " a relationship with a class defined for only one end
在预备工作期间， “根除”同一个仅仅为一个端点定义的类的联系是很有价值的。

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