• 该种副模标本存放北京师范大学鸟类标本馆

    The holotype and paratype specimens are deposited in the Bird Museum of Beijing Normal University.

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  • 所述的挂线呈“U底部设于基座的插设内;

    The vice module has a U shape and its bottom is inserted in the slots on the base.

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  • 介绍壳体结构成形工艺加以更换,完全可以完成壳体次缩口成形。

    The paper has described the necking die structure and the forming process for shell bodies. If the necking die was changed, two necking process can be finished with a set of die.

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  • 根据零件特点设计了一组合式冲孔落料复合冲压两种产品,介绍了结构论述了组合式纵梁复合的结构特点。

    According to parts character, a pair of assembled punching, blanking compound die punching is designed, die structure is introduced, and assembled carling compound die structure is stated as well.

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  • 庄水库防渗墙加固工程所需高性能混凝土,要求和易早期强度后期强度性能好、低高抗拉强度。

    The high performance concrete for core wall of earth dam must be good workability, low early strength, high final strength, high seepage resistance, low elasticity modulus and high tensile strength.

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  • 介绍了典型普通指冲落设计分析结构

    The design analysis and die structure of typical common punching die of button contact are introduced.

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  • 身穿一样的衣服但是脸上戴着一面具

    He we wearing the same clothes as I was, but his face was covered with a black mask.

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  • 针对批量材料小型产品考虑到尽量成本设计出简单级进冲裁

    Aimed at small products with small batch and thin material, considering to lower die costs, a pair of simple progressive punching die is designed.

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  • 通过插座连接结构特点分析确定冲压件的方案设计了一级进介绍主要工作零件总装结构设计

    Through analysis of structure of the socket weld connection pieces, determined the layout project, designed a progressive die. Introduced the design points of main parts and die structure.

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  • 课题主要是针对盒盖的设计通过进行工艺分析比较最终设计注塑

    Through the process of plastic parts for analysis and comparison, the final design of an injection mold.

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  • 分析了车厢侧板零件通风冲压加工工艺特点设计了一针对该零件加工的切口拉伸复合

    Analyzed press technology characteristics of vent-windows of the car side board, designed a lancing-drawing compound die.

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  • 型材剪切传统工艺进行了改进,采用剪切介绍结构特点工作过程

    Improved the traditional process of the section material cutting, designed a cutting die. Introduced the structure characteristics and working process of the die.

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  • 典型的多工位包括了冲孔弯曲料等工艺共用了九个工位完成全部冲压工艺具使用简捷方便

    The die is a typical multi-staged progressive die. It includes punching hole, bending, blanking and so on. It USES nine processes to finish the whole process. The die is operated easily.

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  • 摘要通过对塑料洗衣机手工艺分析设计了两腔注塑

    Abstract: Designed a one-mode two-cavity injection mold through the analysis of the handle of washing machine.

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  • 根据给的零件生产方式大批量生产,设计工位级

    According to the stop piece part drawing, production is mass production, dedign mote than one position progerssive die.

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  • 论文首要注塑设计经过工艺停止剖析比拟最终设计出注塑

    This paper is a plastic injection mold design, plastic parts through the process of analysis and comparison, the final design of an injection mold.

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  • 比拟典型塑料不只包罗镶拼型腔侧向构造都有成型的型,还有延时抽芯机构

    Is a typical plastic mold, which not only include Xiangpin the cavity, lateral core pulling structure, the dynamic model has forming the core, delay core pulling bodies.

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  • 比拟典型塑料不只包罗镶拼型腔侧向构造都有成型的型,还有延时抽芯机构

    Is a typical plastic mold, which not only include Xiangpin the cavity, lateral core pulling structure, the dynamic model has forming the core, delay core pulling bodies.

    youdao

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