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关于Annulus Volume bbl/ft
环体积计算器
This little app calculates the annulus volume between hole and pipe sizes. It also works with the Bit to Surface app for calculation of strokes.
The app has been tested on several different android devices.
最新版本1.0的更新日志
Last updated on 2013年10月19日
Minor bug fixes and improvements. Install or update to the newest version to check it out!