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中文摘要：
对Barney电梯运行周期公式和木村武雄电梯运行周期公式进行综合讨论。指出两种公式的计算原理和不同之处。提出单层行车时间和多层行车时间概念：给出新的计算公式和在电梯运行周期计算中的作用，并举例进行说明。改进了Barney和木村武雄的电梯运行周期计算公式。
英文摘要：
A comprehensive discussion is made on the formulas of round trip time of elevator given by Barney and Kimura Takeo. The calculation principles and differences of the two formulas are pointed out. The concept of single floor flight time and multi floor flight time are put forward, and a new calculation formula and its function in the calculation of round trip time of elevator are given, and examples are given to illustrate them. The calculation formulas of the round trip time of elevator given by Barney and Kimura Takeo are improved.
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