常見例句The pattern of fracture by impact penetration test and tensile fatigue test of thermite welding with stereoscan was observed,and the component of defect with energy spectrum was analyed. 結(jié)果表明:微觀缺陷主要包括微孔和夾雜,其中微孔由微氣孔和微縮孔組成,夾雜物按形態(tài)和尺寸分為團(tuán)簇狀夾雜、錐狀夾雜、粒狀夾雜、積聚物夾雜、絲狀夾雜和混合形夾雜。Keywords expression filtration;porosity;permeability coefficient;picture stereoscan;picture analysis; 壓榨過濾;孔隙率;滲透系數(shù);圖象掃描;圖象分析;stereoscan photograph 掃描電鏡照片stereoscan electron microscope 立體掃描電(子顯微)鏡 返回 stereoscan