首页>
外国专利>
WRITING BOARD MEMBER METHOD FOR MAKING WRITING BOARD AND APPARATUS OF WRITING BOARD
WRITING BOARD MEMBER METHOD FOR MAKING WRITING BOARD AND APPARATUS OF WRITING BOARD
展开▼
机译:制作写字板的写字板成员的方法和写字板的装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
PURPOSE: To provide a writing board device, with which homogeneous writing lines can be obtained, the lines, characters or the like written on which are seen easily and which can be employed for various uses. CONSTITUTION: The writing board device (1, 20) is made of a non-absorbable material and has a surface arithmetic mean roughness Ra of 1 or more and below 5 and further has a writing board member (4, 38) for a predetermined solid drawing material.
展开▼