Can cut conductive material in wantonly shape, get good kerf and smooth edge;

对各种导电材料可随意形状进行切割，可得到优良的切口和平整的表面；

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The granular sludge in UBF was black and spherical, with smooth edge and high density.

UBF反应器处理酒精废水培养的颗粒污泥，颜色为黑色，球形，边缘光滑，密度。

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Compared with pores, resin canal doesn't have smooth edge and it's density is far lower than that of pores.

横切面上树脂道不具有光滑的细胞边缘，分布密度远低于管孔。

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The climbing now was steeper and more difficult, until finally the stream seemed to drop down over the edge of a smooth granite ledge that rose above them and the old man waited at the foot of the ledge for the young man to come up to him.

NPR: Robert Jordan, Hemingway's Bipartisan Hero