空隙: 1.(时间上的) interval 短语和例子在工作空隙时间 in the intervals of business; 战斗空隙 intervals of fighting; interval between battles2.(空间上的) gap; space; clearance; separation; air-gap (ag); slot; [铸件] allowa
Tests for mechanical and physical properties of aggregates - part 4 : determination of the voids of dry compacted filler ; german version en 1097 - 4 : 1999 集料的机械和物理性能试验.第4部分:密实填料空隙测定