Such parameters as ambient oxidizer concentration, temperature level, and fuel identity are held constant.

周围氧化剂浓度、温度量级、燃料性质参数是保持恒定的。

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When ambient temperature falls below the thermal neutral zone, isolated young cannot maintain high constant body temperatures.

当环境温度低于热中性区时，单独的个体不能维持较高的恒定体温。

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Often the temperature and ambient changes of the micro flow sensor cause undesired changes in parameters that are supposed to be constant.

通常，温度和环境的变化会使某些被认为是常量的参量发生意外的变化。

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