小玉是一名高一男生,不久前一个周末的晚上,他在家睡觉前把眼镜摘掉放在了桌子上,却感觉眼镜还在鼻子上,特别奇怪.他当时跟父母说了这事,父母让他不要胡思乱想.周末结束,他回到学校还会回想起那种感觉,并且鼻子开始有明显不舒服的状况,不适感越来越重.两三天的时间里,已经发展到了让其完全不能专心于学习的状态,开...
PURPOSE:To improve the accuracy of polishing finishing while standardize a finishing time by fixing abrasive grains to the surface of a polishing tool which is formed smaller than while in the same shape as a cavity, inserting said polishing tool into said cavity, and relatively moving while pres...