药床的初始体积分数越大，二者稳态爆轰参数的差别也越大。
The larger initial volume fraction of porous beds, the greater difference between their detonation parameters.
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;
可以以初始体积吸水率作为衡量混凝土耐蚀能力的标准，降低初始体积吸水率可以提高混凝土的耐蚀能力。
And the original volumetric water absorption can be regarded as a criteria to evaluate the resistance of concrete to salt physical attack.
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