可在其上按一定模式穿孔的一种纸带.A tape in which hole patterns can be punched.在穿孔的连续格式纸上, 割线之间的间距.In perforated continuous forms paper, the interval between cuts.自动地将编码电信号变换为纸带上的穿孔的任何纸带穿孔机.Any tape punch that automatically converts code...
浑圆度取决于边角的锐度或曲率半径.Roundness depends on the sharpness or radius of curvature of the edges.形状描述该颗粒外形,不考虑颗粒边角的锐度.Shape describes the form of the particle without reference to the sharpness of its edges.主要指标LogMAR视力 、 最佳矫正视力 ...