图像识别采用边缘检测区域的办法,可提取出要检测的粗大呈黑色的石墨组织.
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但是由于冷速较低,结果晶粒粗大,晶界形成了粗大的碳化物网络,使得它在室温下为脆性,其延伸率几乎为零,机加工性能极差。
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Tortoises have a high, domed shell, heavy elephant-like hind legs, and hard-scaled forelegs.
陆龟的背甲高而呈圆盖形;后肢粗大, 形如象腿;前肢覆以硬鳞.
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It is difficult to pass by these houses without stopping to wonder at the enormous beams.
你走过这些屋子,不能不欣赏那些粗大的梁木.
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