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Elaborated the punching components formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die:the die for big diameter three direction pipe which solved the problom of traditional machining,the drawing and punching compound die with float punch-matrix,the drawing and cutting compound dies with unaltered press,the compound die for the back bowl of the noise keeper,the design of the compound die which could produce two workpieces in one punching,the bending die for the ring shape part ,the bending die which used the gemel ,automate loading die for cutting, the drawing,punching and burring compound dies with sliding automated loading,the punching die for the long pipe with two row of hole,the drawing die for the square box shape workpiece and the burring die for the box shape workpiece.
原文对于寒冲压技术的合种、特征及开展圆背做砬简单概述;阐述了冲压整机的构成本理、基础模具构造与活动进程及其设计本理;对典范的冲压件模具进佳的了设计:大曲径三通管冲压复合模设计掀世了大直径三通管的减工困难、带无沉动凸凸模的拉伸冲孔复合模设计、适力压边式落料拉伸切边复合模设计、长音器后挖碗落料、拉深、冲孔、翻边复合模设计、一模二件落料拉伸冲孔翻边复合模设计、环形弯曲件的模具设计、铰链舒方成形工艺及模具设计、半自动送料切角安装设计、涩板式送料拉深、冲孔、翻边模设计完成自动送料、长管少孔冲模设计、带凸缘台阶方盒形整件拉深模战盒形件正壁小孔翻孔模。
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On the basis of symmetry model of cosmos of material and antimatter energy with the center of star of antimatter and material of extra negative energy,this paper analyzed proton and antiproton of negative energy,which have not agglomerated to the star of antimatter and material of extra negative energy,and it puts forward that the space so called"empty with nothing"can produce young galaxy.
以特大负能反正物质星体为中心的正能正反物质对称宇宙模型的基础上,对尚未凝聚到特大负能反正物质星体中去的负能反正质子和所谓空无一物的空间区能产生年轻的星系作了进一步分析,从而发展成了正负能正反物质对称宇宙模型,使得更多的天文观测资料都能做出统一的解释
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The transformation of such 'irrelevant' concerns forms the basic narrative for Harbour and, reflecting his sensitive artistic practice, functions as a metaphor for his methodology of 'expansive imagination': a fluid, outward and boundary-less approach to contextualising the meanings behind everyday objects and the banalities of life.
这件作品构成了「海洋」的敍述基础,展示了他敏锐的艺术实践触角,并作为其扩张性想像的象徵:以流动、向外延展及无地域界限的实践方法,将存在於日常物件及平庸单调的生活背后的意义表现出来。
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In orde to obtain system optimization in high efficiency production and operation safety, the microcosmic problem of goaf treatment was brought into the creative design of mining method and the synergism of two problems was studied. Firstly, in view of the occurrence characteristics and mining conditions of catacalstic ore section of orebody No. 105 in Gaofeng mine in Guangxi province, considering the adaptability to different scale goafs in the ore section, based on mining environment reconstructing idea and continuous mining mode, a new mining method (mining environment reconstructing non-pillar sublevel-strip continuous mining method) was put forward. Then, some repr, esentative goafs were selected and their stabilities were calculated by discrete element method on the basis of differences of goaf scale, surrounding conditions and situ stress field. At last, the mining layout was adjusted on the basis of goafs stability analysis and the goafs were adjusted as a part of cutting engineering, blasting space or stope, so as to determine all kinds of goafs treatment schemes.
摘 要:为在生产高效和作业安全上取得系统整体最优,将碎裂矿段的空区处理微观问题纳入采矿方法创新设计宏观问题中,开展2种问题的协同研究:首先,针对广西高峰矿105号矿体碎裂矿段的赋存特点和开采技术条件,考虑对各种规模空区适应性,基于采矿环境再造和连续采矿理论,提出采矿环境再造无底柱分段分条连续采矿法;然后,根据采空区规模、围岩状况和原岩应力场等条件的差异,在所有采空区中选择具有代表性的空区,运用离散元程序对其稳定性进行计算分析;最后,在稳定性分析的基础上,灵活调整开采布局,将采空区调整为部分切割工程、自由爆破空间或采场,从而确定出各种规模空区的处理方案。
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In this study, gypsum used in gypsum moulde is studied so as to study further the influence of a gypsum and plaster, a gypsum and desulphurization gypsum , raw gypsum and gpsum and anhydrite with gypsum on modle gypsum. All conclusions are developmental to the development of porcelain industry.
我们对价格较低的β-半水石膏粉进行各项改性研究,希望以此为基础,再探讨α-半水石膏与天然建筑石膏、α-半水石膏与脱硫石膏混合以及生石膏与天然建筑石膏、无水石膏与天然建筑石膏混合对模型石膏的影响,还讨论了石膏细度对模型石膏的影响,所有的研究结果对我国陶瓷产业的发展有一定的借鉴意义。
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In this study,α gypsum used in gypsum moulde is studied so as to study further the influence of a gypsum and plaster,α gypsum and desulphurization gypsum,raw gypsum and gpsum and anhydrite with gypsum on modle gypsum. All conclusions are developmental to the development of porcelain industry.
我们对价格较低的β-半水石膏粉进行各项改性研究,希望以此为基础,再探讨α-半水石膏与天然建筑石膏、α-半水石膏与脱硫石膏混合以及生石膏与天然建筑石膏、无水石膏与天然建筑石膏混合对模型石膏的影响,还讨论了石膏细度对模型石膏的影响,所有的研究结果对我国陶瓷产业的发展有一定的借鉴意义。
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In this paper, aiming to solve these problems and meet the developmentrequirement, firstly a series of grafted starch sizing agent with good pasting and excellentsizing performance were synthesized utilizing the cheap mealie starch as the reactants.The denatured starch, polyacrylic size combination, nanometer compound acrylic acidcopolymerization pulp with titanium dioxide, the silicon dioxide has designed a series offormulas. The results showed the polyester size had stable viscosity and excellentfilm-formation property, thus it was a good size for fiber. At last, a kind of mixed sizeswas presented to reach the satisfied results of high density and low viscosity.
本文针对当前浆料存在的问题,结合浆料发展的趋势,立足于廉价的玉米淀粉,开发制备了性能优异的接枝淀粉,该浆料上浆性能优异且退浆容易,是一种能获得较好经济效益和社会效益的绿色浆料;将变性淀粉、丙烯酸乳液聚合浆料、纳米二氧化钛和二氧化硅乳液共聚浆料组合,设计了一系列配方,在对这些配方进行了一系列性能测试的基础上,找到了一种无PVA且价格低廉的组合浆料。
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Blade according to claim 23, characterised in that the two bundles of rovings of the spar are pressed against one another by their portions (51a, 51b) passing through the blade footing (43), between the looped root portion (48) and the portions of the halves that are engaged and held applied against one another in the shell (44) so as to form the sole bundle (5) of the spar.
刀片根据索赔23 ,特点是在这两个捆无捻粗纱的SPAR公司是压一由他们的另一部分( 51A条, 51B条),通过叶片的基础上( 43 )之间,环根部分( 48岁)和部分该部分是从事和举行的适用对一另一个在蚬壳公司( 44 )从而形成唯一的束( 5 )的SPAR公司。
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Culm sheaths yellow-green or pale red-brown, becoming straw-colored, with variably sized brown spots, base edged with white pubescence; auricles and oral setae absent; ligule yellow-green, truncate or weakly convex at apex, very short, 1–2 mm, margin longer pale green ciliate; blade reflexed, green, with yellow margins, linear, flat or crinkled in upper sheaths.
竿箨黄绿色或者苍白的红棕色,变得稻草色,带有易变依大小排列的棕色的点,基础随着白色的青春期推进;叶耳和口头的刚毛无;叶舌黄绿色,削去或者身体虚弱凸在先端,非常短,1-2毫米,边更长的苍绿色纤毛虫;反折,绿色的叶片,具黄边缘,在上面鞘内皱曲的线形,平或。
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In this paper, taking nodal injection power and voltage operation curve of PV node as foundation, according to the basic property of numerical characteristics of random variables and relevant equations for probabilistic load flow calculation the expectations of nodal current, reactive power at PV node and power at balancing node as well as computing formula of covariances are derived by different methods; the computation accuracy of various algorithms are compared and analyzed.
文章以节点注入功率和PV节点电压运行曲线为基础,依据随机变量数字特征的基本性质和概率潮流计算的相关方程,分别采用不同的方法推导了节点电流、PV节点的无功功率及平衡节点功率的均值和协方差计算公式,比较和分析了各种算法的计算精度。
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。