To draw a measurement line, click the New line button and then click and drag in the main image window with the left mouse button to place the start and end points of the line.
画一个测量线，单击新行按钮，然后单击并拖动在主图像窗口用鼠标左键将开始和结束点的线。
To draw a measurement line, click the New line button and then click and drag in the main image window with the left mouse button to place the start and end points of the line.
画一个测量线，单击新行按钮，然后单击并拖动在主图像窗口用鼠标左键将开始和结束点的线。
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