transient deviation

Using a small bead-in-glass thermistor probe as a heating element, an apparatus was developed for measuring thermal conductivity of liquids by the transient method. The apparatus was calibrated by using seven standard substances at 25 ℃, with an average deviation of measurements less than 2%.

以珠状热敏电阻为加热元件，建立了用瞬时法测定液体导热系数的装置，在25℃下用乙二醇等7个标准样品，对该装置进行了标定，平均偏差为2%。

The main contents of power energy include frequency deviation, voltage deviation, voltage fluctuation and flicker, voltage unbalance, temporary or transient over-voltage, wave distortion, voltage dips and interruption, power supply reliability and so on.

电能质量的内容包括频率偏差、电压偏差、电压波动与闪变、三相不平衡、暂时或瞬时过电压、波形畸变、电压暂降与短时中断以及供电连续性等。

It is revealed that the deviation approaches 0 for inner parts, thus hinting the substitution of periodically averaged heat source for transient one in thermal balance test does not result in the temperature deviation between test and flight.

结果表明，对于航天器内部温度，瞬态、准瞬态和稳态三种方程得到的温度的平均值不存在差异，由此证明采用周期平均热源的热平衡试验方法不会导致试验温度与飞行温度的差异。