quartz什么意思 n.石英 quartz词组短语 quartz sand:[化]石英砂 quartz crystal:石英晶体 quartz vein:石英脉 quartz glass:石英玻璃 quartz tube:石英管 quartz近义词 n.[矿物]石英 crystalline silica quartz例句 1.Sand Mineral particles consisting...

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