Gansu province is located in the geographic center of the motherland, is located in the upper reaches of the Yellow River, a vast territory. Between latitude 32 ° 11 '~ 42 ° 57', longitude 92 ° 13 '~ 108 ° 46' between. The east of Shaanxi, and Ningxia Hui Autonomous Region adjacent to the northeast, south Sichuan, west of Qinghai, Xinjiang, Inner Mongolia, north, and bordering the People's Republic of Mongolia. Complex and varied topography of Gansu, mountain, plateau, plain, valley, desert, the Gobi, the type of complete, staggered distribution, terrain tilt from southwest to northeast. Strip of the terrain was like, 1655 kilometers from east to west, north and south 530 kilometers wide and complex landscape patterns can be broadly divided into six topographical regions with their own characteristics:
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Compared with the ordinary header, the experimental results show that staggered perforated plate header greatly improves the distribution of outlet flow and outlet temperature.
通过实验与工业用基本型封头对比，结果表明错排孔板型封头能够明显地改善换热器出口截面流量和温度分布的不均匀性。
The stress distribution of the staggered floor shear wall structure is analyzed and its mechanical characteristics are discussed at first in this paper.
首先分析了错层剪力墙结构的应力分布并讨论其受力特点。
The effect of each parameter on distribution of static pressure and pressure loss coefficient are found out. Experiments have been carried out in trapezoidal duct with staggered pin fin arrays.
为了解不同的雷诺数和出流比情况下各种因素对压力损失系数的影响，对有侧流梯形扰流柱通道端壁的静压和压力损失系数进行了实验测量。
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