When sand sinking pools are full and lose efficacy, the method of "digging out sands to wait for deposition" can increase the life of irrigation region.
当沉沙池淤满，失去自流沉沙作用时，采用“以挖待沉”可以延长灌区运行年限，但没有扬水沉沙方案优越。
Method Close study was carried out about 6 cases of late thoracic malignant tumor treated through transplantation of embryonic thymus in renal subserous region.
方法对6例晚期恶性肿瘤患者进行胚胎胸腺肾被膜下区移植。
The paper gives out a method to combine non-convex figures into a convex one, a method to get bumping region by using NFP, and a scanning-line method to search the gaps among adjacent figures;
给出了任意图形的多边形逼近、非凸图形的凸组合、利用NFP做碰撞检测和扫描线搜索图形间缝隙等方法。
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