求翻译：：承包商通过投标取得项目，是市场经济条件下的必然。但是，作为承包商来说并不是每标必投，这就有个投标决策的问题。承包商在投标决策时要考虑的因素很多，需要广泛、深入调研，系统地积累资料，并作出全面、科学的分析，才能保证投标决策的正确性。是什么意思？

: Contractor projects through bidding, is inevitable under the market economy. However, as a contractor, not every subject will vote, the bid decision problems. Contractors in bidding decision to consider many factors, require extensive, in-depth research, systematic accumulation of information, and to conduct a comprehensive, scientific analysis, to ensure correctness of bid decision.