将现代风洞设备同其历史上的先驱相比较，很容易对风洞技术的进展情况作出评价来。

An appraisal of the advances in wind tunnel test techniques can be readily obtained by comparing the modern wind tunnel facilities with their historical predecessors.

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这种风洞实质上是一种简单的气流试验台，它通过配套的设备能为实验提供各种可控制的气流。

This tunnel is, in substance, a simple air flow bench with necessary test devices offering various controlled streams for experiments.

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P SI8400电子压力测试系统是美国压力系统公司生产的高精度的压力测量设备，广泛应用在风洞压力测量试验中。

PSI8400 pressure test system is of high precision pressure measurement equipment produced by PSI Inc. of USA and it is used in pressure measurement test of wind tunnel widely.

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