水位表的可见范围应大于最高、最低安全水位。
The visible scope of the water gauge should not surpass the highest and the lowest safe water line.
控制室内至少装两个可靠的远传水位表，每个远传水位表在运行规程规定的最低、最高安全水位刻度处应有明显的标记。
At least two remote water gauges should be installed in the control chamber. A clear mark should be made at the highest and lowest safe water line, which each remote water gauge runs as regulated.
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