求翻译：在开发建设项目造价管理中，制定工程签证管理方法加强工程签证控制范围，可以让工程签证费用占工程造价的比例有一定缩减，让开发建设项目的工程造价得到真实的反应和有效控制。是什么意思？

In the development and construction project cost management, develop project management methods to strengthen the visa visa control project scope, cost engineering visa allows the proportion of total project cost must be reduced, so that development projects of project cost and effective control of

Cost of projects in development and construction project management, and develop ways to strengthen project management Visa Visa controls, can allow the works of visa fee is a percentage of the value of the works have a certain reduction in proportion to the value of the works project development an

In the development items of basic construction construction cost management, the formulation project visa management enhancement project visa control area, may let the project visa expense account for the project construction cost the proportion to have reduces certainly, lets the development items

Development and construction project cost management, preparation of engineering visa management approach to strengthen engineering visa control, you can have the visa fee percentage in construction cost of engineering a certain reduction, development and construction projects construction cost with

In the development items of basic construction construction cost management, the formulation project visa management enhancement project visa control area, may let the project visa expense account for the project construction cost the proportion to have reduces certainly, lets the development items