Rather than force the managers to pull two separate Feeds while correlating the data sets, as they would with conventional AtomPub, AtomServer adds the concept of an Aggregate Feed.

要求经理们拉出两个单独的Feed，并进行数据集的关联，这是常规的AtomPub做法。与此不同的是，AtomServer加入了Feed聚合的概念。

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The results show that the compressive strength and elastic modulus of recycled coarse aggregate concrete are lower compared with conventional concrete.

结果表明：相对于普通混凝土，随着再生粗骨料取代率的增加，再生粗骨料混凝土具有强度和弹性模量降低等特点；

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