D623 improves water retention of fresh mortar and entrains a large amount of micro air void which causes bulk density to reduce, pore size distribution to change.
D623提高保水新鲜砂浆和夹带了大量的微空隙，这会导致堆积密度降低，孔径分布改变。
After I have listened, started to dislike it to come, as soon as saw it to come out entrains it, but each time has not bumped into it, it shrinks to the conch in goes.
我听了后，开始讨厌起它来了，一看见它出来就去拽它，可是每次还没碰到它，它就缩到海螺里去了。
After I have listened, started to dislike it to come, as soon as saw it to come out entrains it, but each time has not bumped into it, it shrinks to the conch in goes.
我听了后，开始讨厌起它来了，一看见它出来就去拽它，可是每次还没碰到它，它就缩到海螺里去了。
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