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expansivity
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膨胀系数,延伸性
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详细解释：
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以下为句子列表：
英文: A thermal expansivity test device consisting of hating unit, attemperating unit, displacement transducer, recorder and so on, was developed to determine the thermal expansivity of new sand, clay-beaded sand, sodium silicate sand, resin bonded sand with th
中文: 摘要铸造用砂热膨胀性测试装置，由加热装置、温控装置、移位传感器、记录仪等组成，可实现铸造用原砂（亦可用于粘土型砂、水玻璃型砂、树脂型砂等）的随温和等温热膨胀性测试。
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英文: For foundry sand from a famous domestic area, the curve of thermal expansivity with the temperature was described.
中文: 本文最后给出了利用本装置测得的国内某著名铸造用原砂的热膨胀－温度曲线。
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