The contradiction reflected in aggregate for macro economy is in effect resulted from irrational national economy structure.
宏观经济反映在总量上的矛盾，实际上是由国民经济结构不合理所引起的。
Then single aggregate concrete specimens is established, the influence of interface strength to the macro-strength is discussed, while the shape of aggregate on the crack extension is investigated.
建立单颗骨料混凝土试件，探讨界面强度对混凝土宏观强度的影响，同时探讨骨料形状对裂纹扩展的影响。
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