Selecting natural dolomite as raw materials, the authors made a new kind of pearl nuclei through mechanic grinding and surface treatment.
Selecting natural dolomite as raw materials, the authors made a new kind of pearl nuclei through mechanic grinding and surface treatment.
摘要筛选天然白云岩为原料，采用机械磨削和表面处理等工艺，制成新型珠核。