... railroad diesel fueln.机车用柴油 railroad curve survey铁路曲线测量 the bed of a railroad铁路路基 ...
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本文介绍了一种检定卧式油罐及铁路罐车测量曲线体半径的专用工具。
A special tool is introduced here to measure the curved object radius of the horizontal oil tank and railroad tank car.
在测量既有铁路曲线时，传统的测量方式是偏角法，计算曲率和拨距的方法是渐伸线法。
The traditional method to measure the curves in exiting railway is the method of deflection Angle, while the method to calculate the curvatures and the deflection distance is the involute method.
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