The content includes: selection of mixture proportion;
内容包括：混合料配合比选择；
Under the maximum mixture proportion of biomass granule, discharge amount of SO2 can reduce 50%.
在生物质颗粒最大掺混量的情况下，SO2的排放量减少50%。
By using orthogonal test method, the selective study on the mixture proportion about a type of polyurethane concrete was processed.
采用正交试验，对一种聚氨酯混凝土的材料和配合比进行了选择性研究。
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