FPS Camera improvement. Easier to nagivate over terrain, much less camera sinking under terrain, and better field of vision.
改进了第一人称视角，使得视角更加平滑地俯略地面，减少了视野陷入地面之下现象，并有了一个更好的可见范围。
Pipe sinking drawing is analysed using continuous speed field and the equations of wall thickness variations in sinking drawing established.
利用连续速度场分析了圆管空拔过程，建立了空拔壁厚变化量计算式。
The forming law of sinking column in Huabei type coal field, especially at the Fengfeng coal mine is analyzed and the mechanism of groundwater inner cycle in sinking columns is put forth.
分析了华北型煤田，特别是峰峰矿区陷落柱的发育规律，提出了陷落柱的地下水内部循环形成机理。
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