In order to ensure engineering quality, the mix ratio test must be done strictly.
为了保证工程质量，必须进行严格的配合比试验。
Only strictly control all construction link, to ensure the engineering quality, achieve the desired effect.
只有严格控制各个施工环节，才能确保工程质量，达到预期的效果。
Only strictly control all construction link, to ensure the engineering quality, achieve the desired effect.
只有严格控制各个施工环节，才能确保工程质量，达到预期的效果。
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