With the use of classic mechanics, there are too many hypothesis and predigestion in the calculation of complex structures, so the veracity of results is not very good.
采用的经典力学计算时，对于复杂结构的计算中采用的假设和简化太多，结果的准确性相对较差。
This paper discusses a method to reduce calculation load by means of layered searching construction of association hypothesis events.
本文从联合关联事件的构造出发，讨论关联假设事件的分层构造，以达到降低计算量的目的。
With the condition of the basic hypothesis, the approximate calculation formula was worked out on the gas folwing speed in the tubular centrifugal ventilator.
在基本假设的条件下，导出了筒形离心式通风机筒壳内气体流动速度的近似计算公式。
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