空中，零点气体，标定刻度气和燃料表明没有问题。
然后，增加采样的压力，直到读显示标定刻度气体值。
Then increase the sample pressure until the reading displays span gas value.
文章通过理论推导、计算数据及实验数据对转子流量计流量计算理论及刻度标定进行探讨。
A theoretical calculation on the flow in the rotameter and its calibration were studied both theoretically and experimentally.
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