拉孔

Experiments show that at uniaxial tension hollow hole growth rate than in biaxial tensile Medium to small.

实验表明在单轴拉伸中空孔的增长速率比在双轴拉伸中要小。

The article also introduced several important modalities of the polyphony music appeared after Consecutive Organum at meanwhile, such as Discantus, Gymel, Faburden, Clausula, Conductus, and along with clausula, the Motet came out, which provide the possibilities of using chords.

同时文中还介绍几种继"平行奥尔加农"之后出现的较重要的多声部音乐形式——"狄斯康特"、"吉美尔"、"伏波顿"、"克拉乌索拉"、"孔杜克图斯"；而且伴随着"克拉乌索拉"的出现，"经文歌"也随之出现，从而为和弦的出现提供了可能。

Systematical research on ceramics removal during honing process is first completed in three aspects: honing incidental tensile stresses, honing crosshatch pattern and interaction of cracks among adjacent grits in ceramics.

被加工孔类零件内部的周向珩磨附加拉应力是珩磨加工方式所特有的，对于抗拉强度低、脆性大的陶瓷材料，其附加拉应力对珩磨过程的材料去除有重要影响作用。

Application: moulds or tools for large cross section, complex shape, heavy shock load; wire stretch mould, cold punch mould, measures, fretsaw, cutter.

例如，形状复杂的冲孔凹模、复杂模具上的镶块、钢板深拉深模、拉丝模、螺纹挫丝板、冷挤压模、冷切剪刀、圆锯、标准刀具、量具等。

Using the relations between Hermite and Laguerre-Gaussian modes and expanding the window function of two-dimensional rectangular hard-edged apertures into a finite sum of complex Gaussian functions, the propagation of complex- argument Laguerre-Gaussian beams through a paraxial optical ABCD system with a rectangular hard-edged aperture is studied. An analytical propagation equation is derived and used to study the diffraction at the rectangular hard-edged aperture and the focusing properties of complex-argument LG beams.

利用拉盖尔－高斯模和厄米－高斯模的变换公式，并使用将二维矩孔光阑窗口函数展开为有限个复高斯函数之和的方法，得到了复宗量拉盖尔－高斯光束通过含矩形硬边光阑近轴ABCD光学系统的变换的解析传输公式，并对复宗量LG光束通过矩形硬边光阑的衍射和聚焦特性进行了研究。

The present paper analyzes causes to the breakdown of the wire rod such as the central shrinkage cavity and carbon segregation, surface transverse cracks, harmful structure of bulky pearlite and web shaped carbonide and puts forward a few relevant measures for improvement in the physical product quality and reduction of fracture rate of the wire rod including proper control of the casting temperature,drawing speed, intensity of secondary cooling as well as adjustment of the intensity of control rolling and accelerated cooling and optimization of the drawing parameters.

通过对中心缩孔和碳偏析、表面横裂纹、粗大珠光体或网状碳化物不良组织等引起断丝原因的分析，提出通过合理控制浇注温度、拉速、二冷强度、控轧控冷强度及拉拔工艺参数等措施，改进盘条实物质量，降低断丝率。关键词 SWRH82B/SAE1080；脆断；质量分析；工艺控制

The article also introduced several important modalities of the polyphony music appeared after Consecutive Organum at meanwhile, such as Discantus, Gymel, Faburden, Clausula, Conductus, and along with clausula, the Motet came out, which provide the possibilities of using chords.

同时文中还介绍几种继&平行奥尔加农&之后出现的较重要的多声部音乐形式——&狄斯康特&、&吉美尔&、&伏波顿&、&克拉乌索拉&、&孔杜克图斯&；而且伴随着&克拉乌索拉&的出现，&经文歌&也随之出现，从而为和弦的出现提供了可能。

By optimizing such process as refining dreg series and deoxidizing,mode of adding slagging raw materials,blowing Ar system,preventing nitrogen adding in refining process,adopting such process measures as controlling degree of superheat of smelten steel strictly,selecting suitable pulling speed and colling water quantity,using electromagnetism stir in continuous casting,the center carbon segregation index is at about 1.04 basic...

通过对精炼工序中精炼渣系和脱氧工艺选择、造渣原料的加入方式、吹氩制度、防止增氮等工艺的优化，在连铸中采用严格控制钢水过热度、选用合适的拉速和冷却水量、使用电磁搅拌等工艺措施，中心碳偏析指数集中在1.04左右，夹杂物尺寸变小、数量大为减少，疏松和缩孔均降低到0.5级以下，线材面缩率达到34%以上，大部分为41%~44%，索氏体体积分数达到91%，可顺利拉拔至0.3 mm。

The fracture reasons of high strength PC steel wire are analyzed, it's considered that center segregation, central cavitation, poriness and inclusion are the metallurgical reasons which lead to the facture of PC steel wire and in the rolling process, differential coping quality, microcrack caused by surface defect, abnormal microstructure caused by burnt and improper cooling velocity, the ears on the head of the wire, overlapping of the wire rod itself are the main reasons which lead to the facture of PC steel wire. At the same time, inappropriate pickling, differential phosphorization quality, the bad heat treatment quality, the generation of crack in the improper drawing and transverse crack caused by abnormal laying of the drawing die are also the reasons of the cracking of PC wire.

对高强度PC钢丝断裂原因进行了分析，认为连铸坯的中心偏析、中心缩孔、疏松和夹杂是导致PC钢丝断裂的冶金原因；轧制过程中，较差的修磨质量、表面缺陷导致的微裂纹，过烧以及不适当的冷却速度导致的非正常显微组织，盘条头部的耳子、盘条本身折叠是导致PC钢丝断裂的主要原因；同时，不恰当的酸洗、较差的磷化及热处理质量、不适当拉丝裂纹的产生、拉拔模具安放不正导致的横裂也是PC钢丝断裂的原因。

METHODS: Bone marrow was sterilely separated from human. After heparinization, human BMSCs were harvested using density gradient centrifugation and adherence method. At the fifth passage, BMSCs at 1×108/L were incubated in the 6-well plate and divided into 2 groups. BMSCs in the edaravone group were 50% confluent and incubated in L-DMEM containing basic fibroblast growth factor and fetal bovine serum for 24 hours. After washing in PBS, these BMSCs were incubated in serum-free L-DMEM containing 20 mg/L edaravone for 24 hours. BMSCs in the blank control group were incubated in L-DMEM, supplemented with 10% fetal bovine serum.

无菌抽取的骨髓经肝素化后，采用密度梯度离心法及贴壁筛选法分离获得人骨髓间充质干细胞，传至第5代按1× 108 L-1接种于6孔板内，设立2组，依达拉奉组细胞达50%融合时用含碱性成纤维生长因子、胎牛血清的L-DMEM预诱导24 h，PBS洗涤后再用20 mg/L依达拉奉无血清L-DMEM诱导24 h；空白对照组始终用含体积分数为10%胎牛血清的L-DMEM培养，不加任何预诱导剂和诱导剂。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。