In this paper, a special wavelet transform used to analyze snapped sectionsurface image of three-dimensional braided composite material and detect the fiber volume fraction is proposed.
The invention adopting the technical scheme has the advantages of high mixing efficiency between air and gas, short flame length during the combustion and large sectionsurface of flame.
由于采用了上述技术方案,本发明具有使空气和煤气混合效率高,燃烧时火焰长度短、火焰截面积大的优点。
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The surface of a section of Route 101, paved two years ago by McAdam Road Builders, is now badly cracked and marred by dangerous potholes.