This is a energy comparison method using balance bridge.
这是一种利用平衡电桥和能量比较的方法。
The concept of anticipation and change, which underlie the principles of supply and demand, substitution, balance, and externalities, are basic to the sales comparison approach.
依据供求原则、替代原则、平衡原则和外部性原则的预期的概念和变化的概念是市场途径的基础。
Comparison of vacuum is made between the single and double suction vacuum pump, between the unit with balance passage and that without balance passage.
对单级与双级抽气开平衡通道与不开平衡通道的真空泵的真空度进行了对比分析。
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