通过建立ANSYS对比模型，分析树木各结构参数对风振减振效能的影响。
Screens structure parameters, establishes contrast model by ANSYS, analyzes the impact of structural parameters on the wind-induced vibration reduction of tree structure.
本文对一开始就冷凝的叉流式空气-空气湿热交换器提出一种新的热力计算法，即对比模型法。
The new method of thermodynamic calculation (the contrast model method) for air-air crossflow wet heat exchanger with wet air condensing first at the entry is proposed in this paper.
通过对胜利油田GD 2 7 - 3井现场实验和算例分析，建立的经济对比模型是合理的，对现场实际作业具有较大的指导意义。
On-site experiment and example analysis of this method in well GD27-3 of Shengli oilfield show that this economic comparison model is reasonable, and has a great guidance meaning to on-site operation.
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