空隙体积 meaning in Chinese

dead volume
void volumn

Study on workability - design of fresh concrete was carried out by introducing coefficient of filling - voids of mortar ( cfvm ) , where cfvm was the ratio of voids content of densely packed coarse aggregates to the volume of mortar in concrete
在新拌混凝土工作性设计中引入了砂浆填充系数c _ ( fvm )的概念， c _ ( fvm )是混凝土中砂浆体积与粗集料振动密实空隙体积的比值。