optical crown glass
常见例句
- BK7/K9 is a borosilicate crown optical glass with high homogeneity, low bubble and inclusion content.
K9玻璃是硼矽酸鹽光學玻璃材料的一種，純度高、氣泡少、襍質低。 - Buddhism spread to China, from the crown of glass, "pharmacist optical glass Nyorai" by the UN, "the Oriental Land", that is, for a net of glass, light, "Heaven, Earth, " three realms of dark.
彿教傳到中國後，奉琉璃至寶，“葯師琉璃光如來”所居的“東方淨土”，即以淨琉璃爲地，光照“天地人”三界之暗。 返回 optical crown glass