raw dolomite 中文意思是什麼
raw dolomite
解釋
生白雲石-
Selecting natural dolomite as raw materials, the authors made a new kind of pearl nuclei through mechanic grinding and surface treatment
摘要篩選天然白雲巖為原料,採用機械磨削和表面處理等工藝,製成新型珠核。
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