其测试精度满足混凝土质量控制要求，故以此作为宁夏地区强度分析曲线。
The measuring accuracy meets the requirement for controlling the quality of concrete, so the curve can act as a standard one for Ningxia Municipality.
水利工程的主要特点在于其投资规模较大，施工周期较长，质量控制要求高。
The main characteristic of water conservancy project is in its investment in large scale, the construction period is longer, high quality control requirement.
通过对烟尘样品的试验与比较，提出了烟尘样品的实验室质量控制要求和方法。
The paper describes the specifications and methods for quality control for the analyses of smoke samples, after tests and comparison of different smoke samples.
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