物体的边角线，亦指物体上的条状隆起。
n. ridge
misc. chine line
在上述刀片主体的前面和后面的交叉棱线部形成切削刃；
The method for manufacturing this surface-coated cutting insert includes: forming a cutting edge at the intersecting edge line region;
我用手指沿黄铜的棱线摩挲，如今这些棱线都快变成金黄色了。
I rubbed my finger along the ridges of brass, now turning golden.
部分患者的指甲上会出现白色的棱线，或在指甲周围出现变色，或甲床发暗。
Some patients develop white ridges or bands of discoloration along the nails or develop a darkening of the nail bed .
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