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1)  sealing and returning the order
封还词头
1.
The sealing and returning system in Song Dynasty changed to be different from Tang Dynasty, the Secretary sealing and returning the order came to be much more chiefly than "geishizhong" sealing and returning.
封还词头这一封驳方式发端于唐代,形成于北宋仁宗朝,主要由中书舍人职掌。
2)  sealing and returning
封还
3)  head [英][hed]  [美][hɛd]
封头
1.
Influences of different samples on the examination results of tensile strength of polymerizer head;
不同试样对聚合釜封头拉伸性能检测结果的影响
2.
Study on thickness calculation for hem pyramidal heads;
折边锥形封头厚度计算探讨
3.
Finite Element Analysis of the Stress of the Offset Nozzles on the Head of a Liquid Tank;
溶液罐封头偏置接管应力有限元分析
4)  vessel head
封头
1.
Reliability analysis of the connecting zone of cylinder and vessel head of high pressure vessels;
高压容器筒体与封头连接区可靠性分析
2.
The manufacture was required considerable technology, especial the vessel heads.
镍基特种合金耐蚀性好 ,在化工容器中得到广泛应用 ,但其制造技术要求高 ,尤其是封头的加工成形有难度。
3.
On the basis of the elasto-plastic finite element method, ANSYS software is applied in order to simulate spinning deformation of the vessel head with large size and thin wall thickness.
本文应用ANSYS软件对薄壁大尺寸封头冷旋压成形过程进行了弹塑性有限元数值模拟。
5)  head plate
封头
1.
Study on a new style head plate equipment;
一种新型封头设备的研究
2.
Qualification licence and forcible supervision inspection regulations were enforced by the law and code of China for the first time on head plate manufacture of special equipments such as pressure vessels etc.
中国法规首次对压力容器等特种设备用封头实施制造资格许可和强制的监督检验制度。
3.
Formed heads for steel pressure vessels is the first complete and unite standard about head plate.
本标准是我国压力容器第一部完整和统一的封头标准。
6)  dome [英][dəʊm]  [美][dom]
封头
1.
Buckling analysis on rear dome of solid rocket motor case;
固体火箭发动机壳体后封头屈曲分析(英文)
2.
Development on Dome Reinforcement of Composite Case;
复合材料壳体封头补强技术研究
3.
In addition, special care should be taken to the dome insulation, and the replacement with high grade material.
通过外观、着色、金相、断口、腐蚀产物及腐蚀介质综合分析 ,分析出汽提塔上封头开裂是不锈钢在湿H2 S环境下的硫化物应力腐蚀开裂 (SSC)。
补充资料:送徐州张建封还镇
【诗文】:
牧守寄所重,才贤生为时。宣风自淮甸,授钺膺藩维。
入觐展遐恋,临轩慰来思。忠诚在方寸,感激陈情词。
报国尔所向,恤人予是资。欢宴不尽怀,车马当还期。
谷雨将应候,行春犹未迟。勿以千里遥,而云无己知。



【注释】:



【出处】:
全唐诗:卷4_7
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