通过偏光显微镜和反光显微镜观察试样釉层的显微结构，发现虹彩釉在成釉过程中釉层表面析出了针状的黑锰矿晶体。
The microstructure of the sample glaze layer under polarizing microscope and reflecting microscope has showed acicular hausmannite crystals on the glaze layer surface of luster glaze.
通过偏光显微镜和反光显微镜观察试样釉层的显微结构，发现虹彩釉在成釉过程中釉层表面析出了针状的黑锰矿晶体。
The microstructure of the sample glaze layer under polarizing microscope and reflecting microscope has showed acicular hausmannite crystals on the glaze layer sur…
另外还系统地试验了试样灼烧温度和灼烧时间对黑、白钨矿溶解率的影响。
The effects of ignition temperature and period of ignition on solubility of scheelite and wolframite have been investigated.
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