It is difficult to detect the absolute density of rock by ct image in quantitative analysis of rock damage process in compression.
用CT图像定量分析岩石受力损伤破坏过程的难点，是难以知道岩石内部的绝对密度变化量。
Of course, it cannot provide absolute standards, if only because the definition of a "city" (by administrative control or by population density?) may differ between countries.
当然，并不能完全提供一个标准，除非各国的城市定义不一样(城市以行政管理和人口密度来定义？)
Substantial density, absolute dry density and porosity of bamboos from 10 species of bamboos were studied.
本文对10个竹种竹材的实质密度、绝干密度和孔隙度进行了研究。
Methods: Absolute density method by improved LJ culture.
方法：改良罗氏培养基绝对浓度法。
Conclusion:A relative decrease of the density and an absolute decrease in the number of podocytes was observed in ORG patients, and varied at different stage of the disease.
结论：ORG患者存在足细胞损伤，并表现出足细胞相对密度下降和绝对数目减少两种类型。
The difficulties in adopting hydraulic transport for the converter sludge, which is of great absolute density and abrades the equipment, and its countermeasures have been introduced.
介绍水力输送重度较大且容易磨损设备的转炉污泥时的困难和采取的具体措施。
The difficulties in adopting hydraulic transport for the converter sludge, which is of great absolute density and abrades the equipment, and its countermeasures have been introduced.
介绍水力输送重度较大且容易磨损设备的转炉污泥时的困难和采取的具体措施。
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