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1·Propylaea japonica is one of important predatory natural enemies in arid and semi-arid area China, especially those preying on younger larvae and eggs of insect pest in orchards and cotton fields.

龟纹瓢虫propylaeajaponica是我国干旱、半干旱地区农林果蔬生产中重要的捕食性天敌之一，尤其在夏季高温、干旱的情况下，对果园、棉田的幼龄害虫和卵的捕食作用非常明显。

2·In this thesis, construction of permutation and combination of matrix, patch and propylaea, that of dilation, erosion, collision and thinning, and cycled structure rule of urban space are presented.

提出城市空间元素的循环结构构筑原则以及原域、通廊、块体间排列组合的六种构筑形式和膨胀、腐蚀、击中、薄化的构筑方法。