Higher level or decrease the pump mounting height.
增高液面或下降泵的安装高度。
These results can be used to choose the pump type and the pump mounting height.
这些结果可作为实际工作中选择泵机类型及其安装高度的参考。
Protecting area: mounting height of the alarm is lower than 6 meters, protecting area is 60 square meters;
保护面积：报警器安装高度6米以下，保护面积为60平方米。
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