Powdered carbon can clean away fingerprint, oil stain on lens, and do not scratch or damage lens.
碳粉头更可清除镜片上难清洁的指印、油污等顽固污渍，且不会刮花、损伤镜头；
Every wound, from the tiniest scratch to the nastiest gash, generates an electric field that pulls in cells that help repair the damage.
我觉得应译为：“每个创口，从最小的抓伤到最严重的深而长的伤口，都产生一个可以趋化细胞的电场，从而有助于修复损伤。”
When used, the mop clamp does not damage the furniture or scratch the earth surface.
各部件均不露出布条束之外，使用时不碰伤家具或划伤地面。
Subsurface damage has been the main cause to lower the laser-induced damage threshold of optics components in high power solid laser system, and one important kind of these is scratch.
亚表面缺陷是造成固体激光器光学器件损伤阈值过低的重要原因，而表面划痕是缺陷中重要的一种。
Third, the plane is particularly smooth, no burr, the incision is very fine, no damage to the workpiece, because it is not contact material, will not scratch the cutting object.
第三、切面特别光滑，没有毛刺的产生，切口是很精细的，对工件没有任何伤害，因为它是不接触材质的，不会划伤切割的物体。
Appearance without damage (with the exception of RF antenna position openings), and after the shell without obvious scratch and damage;
外观无破损（RF天线部位开孔除外），后壳没有明显划伤和破损；
Appearance without damage (with the exception of RF antenna position openings), and after the shell without obvious scratch and damage;
外观无破损（RF天线部位开孔除外），后壳没有明显划伤和破损；
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