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1.The company's investment in new technology has not yet paid off, resulting in a low investment rate for unproductive construction.
该公司对新技术的投资尚未产生回报，导致无效建设的投资率低。
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2. Due to the lack of effective management and planning, the project's investment rate for unproductive constructionis still high.
由于缺乏有效的管理和规划，该项目无效建设的投资率仍然很高。
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3.To improve efficiency, the government should increase investment in research and development and reduce the investment rate for unproductive construction.
为了提高效率，政府应该增加对研究和开发的投资，并减少无效建设的投资率。