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;
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.
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.
Google文件系统至少在三台名为“块服务器”(chunkservers)上存储大体积数据(一般为64mb)；如果一台块服务器发生故障，那么主服务器会负责将数据恢复到新的区域。
GFS stores each chunk of data, typically 64mb in size, on at least three machines called chunkservers; master servers are responsible for backing up data to a new area if a chunkserver failure occurs.
Google文件系统至少在三台名为“块服务器”(chunkservers)上存储大体积数据(一般为64mb)；如果一台块服务器发生故障，那么主服务器会负责将数据恢复到新的区域。
GFS stores each chunk of data, typically 64mb in size, on at least three machines called chunkservers; master servers are responsible for backing up data to a new area if a chunkserver failure occurs.
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