求翻译：究其原因，一方面，在政府投资建设项目的管理上存在着主体越位、缺位等问题；另一方面，由于部分项目建设单位受机构、编制、人员限制而导致专业管理经验不足，而且缺乏政府建设工程项目的投资约束机制，造成项目的投资失控、建设管理水平低、建设工程品质不良等问题的存在。是什么意思？

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The reason for this is that on the one hand, government investment in a construction project management, there was a lack of a body, such as the offside issue; on the other hand, as part of the project undertaker by agency, preparation, personnel limitation of the professional management experience,

Investigates its reason, on the one hand, invests the items of basic construction in the government in the management to have questions and so on main body offside, vacancy; On the other hand, because the partial project construction unit the organization, the establishment, the personnel is limited

The reason is, on the one hand, on the management of Government-invested construction projects there offside, vacancy issues; the other hand, as part of project construction agency, preparation, staff constraints leading to professional management experience and lack of investment mechanism for Gove

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