梦幻西游中召唤兽的初级技能 效果：水属性的攻击法术，按召唤兽等级附加一定的法术伤害。
丁坝是河道及航道整治工程中一种常用的重要建筑物，具有控制河势、保护岸滩、束水攻沙及壅高水位等多种功能。
The spur-dike is a common important building which is usually used in river course improvement projects, controlling river trend, bend protection, beam attack sand and high water levels.
以在自由表面下作小攻角定常运动的水翼为例进行了计算，计算结果与试验结果和其他计算结果作了比较。
Numerical procedure is developed for hydrofoils in steady motion at small angle of attack beneath the free surface. Computational results are compared with that of experiments and other computations.
当物体离壁面很近时，出现排斥现象，水动力系数随攻角的变化呈非线性特征。
While for small clearance, there appear repulsion phenomena, and the variation of coefficients with attack Angle is nonlinear.
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