读取压力数值时，观察表上指针对应的刻度值加上其相对的单位值即可。
Read the pressure value, observation table pointer corresponding to the scale values and their relative units of value.
读取压力数值时，观察表上指针对应的刻度值加上其相对的单位值即可。
Read the pressure value, observation table pointer corresponding to the scale values and their relative units of value.
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