英语词典
The thermal conductivity of heat insulation materials, containing vacuum rubber board, asbestos board and quartz glass etc. was tested at different average temperature with RDL 1 automatic measuring apparatus made by ourselves.
用自行设计的RDL-1型物质热导率自动检测仪测试了真空橡胶板、石棉板等材料在不同温度下的热导率；
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