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介绍了气动中心低速所４ｍ×３ｍ风洞增设风工程试验段的方案选择、结构设计。这个试验段长１４．５ｍ、宽４ｍ、高２．２ｍ，不改动原风洞结构、装拆方便，可较好地模拟大气边界层、并已成功地应用于风工程试验。
The scheme selection and structural design of the additional wind engineering test section of 4m × 3m wind tunnel at the low speed of pneumatic center are introduced. The experimental section is 14.5m long, 4m wide and 2.2m high. It does not change the structure of the original wind tunnel and is easy to assemble and disassemble. It can simulate the atmospheric boundary layer well and has been successfully applied to wind engineering tests.