将设定水灰比的拌制混凝土装入集料系统采集初始体积数据；

The testing method comprises the following steps of: placing mixed concrete set with water cement ratio into the aggregate system to acquire initial volume data;

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对由锥形束x线投影重建体积数据的直接体积成像方法进行了理论研究。

The direct volume imaging (DVI) means the reconstruction of volume data from a series of cone beam X ray 2d projections.

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非定常三维向量场可视化的难点不仅在于数据表现本身，还在于大体积数据的管理和组织。

The difficulty of unsteady three dimensional vector field data visualization stems from both data representation and management of large volume data.

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We could just collect a bunch of data. For a material .What's the volume it occupies at some pressure and temperature?

对一种物质我们可以得到一系列测量数据,在给定的温度和气压下,它的体积是什么？

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