If the cutting ring and eye wear plate is not serious, cutting ring and the eye platespacing <0.1mm, and no more than 1mm between them in a trench scratches, water law can be used directly.
The invention relates to a light information storage media, which comprising a first basal plate, an optical shade layer, a spacing layer and a recording layer.
本发明是有关于一种光资讯储存媒体，包括一第一基板、一光学遮罩层、一间隔层以及一记录层。
3
The invention discloses an electroacoustic transducer which comprises a stationary electric vibrating diaphragm, an opening plate and a plurality of spacing structures.