If the snap to ruler Marks command is turned on, the ruler guide will snap to a ruler mark.

如果“自动靠齐”中的“标尺标记”命令已启用，标尺参考线将与标尺标记自动对齐。

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Because time ruler mark of digital testing system is very limited, sampling is not really synchronized.

由于数字化测试系统中定时标尺的有限分辨率，一般而言，取样不可能做到真正意义上的同步。

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Using a ruler, mark a light line with your pencil down the left-hand edge, about 1-2cm in.

用尺子在左边画一条直线，离边缘1 - 2厘米。

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Using a ruler, mark a light line with your pencil down the left-hand edge, about 1-2cm in.

用尺子在左边画一条直线，离边缘1 - 2厘米。

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