In fact, however, in the process of sluice opening, the outflow is unsteady flow.
其实闸门开启过程中的出闸水流属非恒定流。
At present, the measurement of sluice gate opening usually USES the digital encoder. It has the advantage of high measuring precision and USES the absolute coding method which makes it widely used.
目前水库闸门开度测量通常使用的是数字编码器，它的测量精确度高且使用绝对编码技术，得到广泛的应用。
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