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符物介器
在文字出现之前,原始人类用无固定形态的黏土制成特定形体,用来传递和记录经济交易信息的媒介。
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circumscribed pyramid
circumscribed quadrilateral
circumscribed regular polygon of circle
circumscribed sphere
circumscribed triangle
circumscribing
circumscribing cylinder
circumscriptable quadrilateral
circumscription
circumsolar
circumsolar flight
circumsolar orbit
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circumsolar trajectory
circumsphere
circumstances of eclipse
circumstances of meteorite fall
circumstellar
circumstellar astrophysics
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科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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