空腔原理又叫等压原理是指将门窗开启缝靠室外的一边局部扩大这样使室外较大的风压到了此处是会突然降低甚至有可能做到与室内等压于是便不能继续将雨水压入室内
通过试验证明，多孔蜂窝陶瓷作为辐射能变换体应用在火焰炉中可实现节能的目的。其原理在于构成蜂窝陶瓷的空腔辐射特性。
It has been proved through test that porous honeycomb ceramics could be used as transducer of radiation energy in flame furnace so as to realize the purpose of energy-saving.
针对饰面砖外墙渗漏现象，通过对饰面砖施工工艺分析，提出了“空腔负压”原理。
Based on the leakage problem of exterior wall, the paper presents the principle of "negative pressure and cavity" by analyzing the construction technology of face brick wall.
介绍了黑体空腔连续测温装置的工作原理、功能、设备的校验和使用过程中出现的问题及改进情况。
To introduce the working principle, functions and calibration of continuous temperature measuring device with black body cavity.
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