This paper introduces briefly the principle of the telemetering system for coal ash and gas explosion experimental tunnel and then make an exhaustive analysis of transmission errors of the system.
本文简要介绍煤尘、瓦斯爆炸试验巷道遥测系统的基本工作原理，着重分析该系统的传输误差。
In the two actual tunnel, we measured and calculated visibility of the small target under the three light source, and made a visual experimental method of the small target color.
在两条实际隧道中对三种光源照明下的小目标可见度进行了实际的测量和计算，并且提出了小目标显色性的视觉实验方法。
The calculated wall pressure distributions are in good agreement with experimental data by wind tunnel.
计算得到的壁面压强分布与风洞吹风实验测得的压强分布相一致。
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