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邮政特殊服务
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邮政特殊服务
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邮政服务
释
special postal service
邮政特殊服务
邮政企业按照国家落实通信与信息安全保障措施,保证机要通信、国家规定报刊的发行,以及义务兵平常信函,盲人读物和革命烈士遗物的免费寄递等。在保证国家政令畅通、传播方针政策以及各种信息等方面发挥着重要作用。
随便看
curve of normal distribution
curve of pinchpoints
curve of principal type
curve of pursuit
curve of second order
curve of second order/conical curve
curve of steepest descent
curve of support
curve of the duplication of a cube
curve of the second class
curve of the tangent
curve of third order
curve of zero velocity
curve order
curve orientation
curve representation and modeling technique
curve resistance
curves composition
curve screen
curve setting-out
curve sketching
curve space
curve superelevation
curve surface grinding
curve teapot
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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