- test coal
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分析用煤的英文
例句與用法
- Standard practice of preparing coal samples for analysis
分析用煤樣品的制備的標(biāo)準(zhǔn)規(guī)程 - Standard practice for preparing coal samples for microscopical analysis by reflected light
反射光顯微分析用煤樣品制備的標(biāo)準(zhǔn)實(shí)施規(guī)范