They concentrated on better definition of the optical image 他们致力于提高该光学影像的鲜明度
2.
They concentrated on better definition of the optical image 他们致力於提高该光学影像的鲜明度
3.
Coolplus has porous surface which suppress light reflection at the fiber surface therefore the fiber isa able to exhibit brilliant black which conventional fibers can not achieve 表面之凹凸狭缝构造，使光产生乱反射，而大部分被纤维内部吸收，结果使得颜色之深色性大增，提高鲜明度而具有浓染效果
