Mathematical,physical and chemical symbols of Chinese Braille 全国残疾人康复和专用设备标准化技术委员会(SAC/TC 148) 本标准规定了盲文数学、物理、化学符号的写法和使用规则。 本标准适用于盲文教育、出版及有关的各个领域。 This standard is the original Chinese electronic standard. If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com. After you successfully purchase, we will send the electronic version of this standard to your email address.
