Statistical analysis of density field was quantified at mesoscale level, including interior, adjacent region, path of propagation of the crack and towards both sides of crack.
细观统计结果表明，裂纹区域和邻近区域的密度要低于正常区域的密度，材料内部的疲劳损伤呈现不均匀性。
This is the natural path of industrialization: invention, propagation, adoption, control.
这是工业化的自然路径：发明，传播，应用，控制。
The martial spirit is the guide of health thought "cure", but easy to understand spirit of wushu propagation path is not much.
我国的武术精神是健康思想的引导“良方”，但简单易懂的武术精神传播路径并不多。
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