“postage vouchers”的概念、定义、翻译、参考文献-科学参考

单词	postage vouchers
释义	postage vouchers Encyclopedia 工学邮资凭证释 postage vouchers邮资凭证由国家（地区）邮政部门发行的，作为邮件纳费标志的有价票证。包括邮票、印在邮资信封、邮资明信片、邮资邮简、邮资信卡上的邮资图案，邮资机打印的邮资符志，以及国际回信券。
随便看	symplectic reduction symplectic semisimilarity transformation symplectic space symplectic structure symplectic topology symplectic transformation symplectic transformation group symplectic transvection symplectic vector field symplectic vector space symplectomorphism symplesiomorphy Sympodial bamboo sympodial branching sympodioconidium sympodium sympodula sympodulospore sympolyandria symporia symport Symposium Symposium on Implementation of Urban and Rural Planning in China Symposium on Novels of the Countryside Symposium on Philosophy and Social Science Work

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