Crack-free surface that is formed in ductile regime of glass can be obtained under conventional cutting conditions if the tool parameters are chosen properly.
如果刀具参数选取得当，能在常规切削用量下获得在玻璃的塑性域内形成的、无微裂纹的加工表面。
The primary factors affecting the landslide are the form of the convex free surface and the strength of the crack surfaces in the rock mass.
影响滑塌的主要因素是凸形临空面的形态及岩体裂隙面的强度。
The surface of the films is smooth, homogeneous, crack free and dense.
薄膜表面光滑、无裂纹、致密性好；
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