零点校准气 zero calibration gas
电气零点信号 electric zero signal
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空中，零点气体，标定刻度气和燃料表明没有问题。
The air, zero gas, span gas, and fuel show no problems.
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一种利用闭环控制电路抑制气敏元件零点漂移的设计思想、原理框图及实验结果。
The design idea, principle scheme and executive result for restricting zero drift of gas sensors by means of closed loop control circuit are reported.
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