油污使水面变得平滑，让它更接近于一面镜子：更多的入射日光被反射回处于同一角度的观测器（卫星）。
Oil smoothes the water surface, making it a better mirror: more sunlight is reflected back to the observer (the satellite) at the same angle as the incoming sunlight (right).
当对板面的平滑度，光洁度要求较高，在装饰之前可先对板面进行全面抹灰，再用打磨机砂光，然后进行涂饰面处理。
There is a strict requirement toward the smoothness of the plate surface. Before decoration process begins, the board should be sanded with sanding machine and then grinded completely.
齿面经过脉冲电化学光整加工后表面粗糙度低、微观几何形貌平滑，不仅使齿轮寿命大幅度提高而且工作噪音也大幅度降低。
The lower surface roughness and smooth microform by electrochemical finishing not only enhance highly the life of gear, but reduce the noise.
线槽齿抗折压，结合面平滑，配线槽内90度不易断裂，变型，变色。
Trough tooth bending pressure, combined with the surface smooth, wiring slot 90 degrees not break, unyielding, become angry.
线槽齿抗折压，结合面平滑，配线槽内90度不易断裂，变型，变色。
Trough tooth bending pressure, combined with the surface smooth, wiring slot 90 degrees not break, unyielding, become angry.
应用推荐