Cover crops can improve the water holding ability of soil; however, its effect on soil hardness depends on the moisture content of soil.
覆盖作物可改善土壤持水能力，但是对土壤硬度的影响与土壤含水率有关。
Scraper with double-sided knife with high-strength wear-resistant materials, board, according to the different soil hardness, the control point of the blade buried.
刮板带双面用高强度耐磨材料刀板，可根据土壤硬度的不同，控制铲刀入土角度。
After the said solutions are mixed by a mixer and sprayed by a sprayer, the soil is rolled with a bulldozer and a roll to obtain appropriate soil hardness for civil engineerings.
用搅拌机和喷洒机将该第一和第二溶液混合和喷洒后，用推土机和辗压机将泥土辗压即可得到适用于土木工程用的土壤硬度。
The knife board shovel cape may act according to the soil degree of hardness the difference, adjusts the knife board to be buried the Angle.
刀板铲土角可根据土壤硬度的不同，调节刀板入土角度。
For the hardness in building force reduction pool bottom on soft rock and soil, the paper made a discussion on the construction technique and the quality control method of the concrete bottom.
针对在软基上修建消力池底板难度大的特点，阐述了混凝土板的施工技术及质量控制方法。
For the hardness in building force reduction pool bottom on soft rock and soil, the paper made a discussion on the construction technique and the quality control method of the concrete bottom.
针对在软基上修建消力池底板难度大的特点，阐述了混凝土板的施工技术及质量控制方法。
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