This tool allows you to calculate the actual trail of a bike, given the wheel size, the fork's offset, and the head tube Angle.

这个工具可以让你计算实际线索自行车，由于车轮大小，交岔路口的偏移，并负责管角。

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I turned a sharp turn to the westward at the east Angle of the road-triangle when I realized that the westward trail was all right.

当我注意到西行的路可以走的时候，我就在三角形道路的东角转了一个锐角往西行。

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