The low density graphite gets higher friction coefficient and bulk worn loss than the high density graphite.
低密度石墨的摩擦系数和体积磨损量比高密度石墨材料高。
On the assumption that the product of volume thermal expansivity and bulk modulus based on the thermodynamic approximation theory, a new equation is presented for volume thermal expansion coefficient.
根据热力学近似理论，在对体积热膨胀系数和体积弹性模量的乘积进行假设的基础上推导了一个体积热膨胀系数与体积和温度间的关系式。
The hydroscopic expansion coefficient of grains is an important physical parameter for prediction of bulk densities and study of internal stresses of grain kernel during adsorption and desorption.
湿膨胀系数用于预报谷物堆密度和研究谷粒应力裂纹产生原因等研究。
The practical results show that the plate coil has the advantages of anti-scaling, high heat-transfer coefficient, energy saving, better production capacity, less bulk...
生产实践表明，采用螺旋板换热器具有不结垢、传热系数高、能耗低、生产能力大、体积小和操作方便等优点。
For example saturation density, bulk binding energy, symmetry energy coefficient, incompressibility, and the ratio of effective nucleon mass to free nucleon mass at the saturation density.
比如饱和密度，结合能，不可压缩模量，对称能系数，以及饱和密度时的核子有效质量与核子自由质量的比值。
Four kinds of amendments can improve soil physical properties. Soil bulk density decreased, soil porosity, permeability coefficient and field capacity increased under treatments.
四种改良剂均能不同程度的改善土壤物理性状，能降低土壤容重，提高土壤总孔隙度，加快渗透速度，增加田间持水量。
Four kinds of amendments can improve soil physical properties. Soil bulk density decreased, soil porosity, permeability coefficient and field capacity increased under treatments.
四种改良剂均能不同程度的改善土壤物理性状，能降低土壤容重，提高土壤总孔隙度，加快渗透速度，增加田间持水量。
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