模

Theorem 2.1.4 The following statements are equivalent for a ring R:(1) R is left co-semihereditary;(2) every finitely cogenerated factor module of a finitely cogenerated injective R-module is quasi-injective;(3) every finitely cogenerated factor module of a finitely cogenerated injective R-module is direct-injective.

an环 R下列叙述等价： l）R的每个商环是强左余半遗传的； 2）R的每个商环是左余半遗传的； 3）拟内射R模的每个有限余生成商模是拟内射的； 4）有限余生成拟内射R－模的每个有限余生成商是直内射的； 5）有限余生成fi－(来源：A3fBC论文网www.abclunwen.com)拟内射R－模的有限余生成商模是拟内射的。

In the second part, finite element model of the impeller of the centrifugal fan is built and the mode analysis is carried out.

第二部分建立了风机叶轮的有限元模型并进行模态分析，在ANSYS软件中，采用SHELL63单元对叶轮模型划分网格，进行前100阶模态分析，比较了叶轮自由模态和有预应力模态的差异，提取了模态参数。

Commonly used products: Brass wire, including zinc line, polishing lines, filters, ion exchange resins, conductive block, wire mold, insulation board, guide pulley, bearings, water spray nozzles, descaling agent K200, KC12, eye discharge mode discharge brass, discharge chucks, belts as well as a strong magnet, clamp, charge plates, screws, etc. have the cash, and other great products: Tension brushless motor, sets up nose snakes belly, auxiliary sprinkler head, cluster-type sprinkler head Block, Block, and the mother spray, sprinkler head connected·, sprinkler head covered by panels, round round of vice-axis spindle, folder line wheels, power wheels, flow meter, electric plate fixed to the pad, round round, wire wheels, gears, axle win hearts catheter, vertical meter cable, pole lines, grounding line, guide line wheels, micro switch, on the nose, eyes mold base, the wheel seat, rectifier ring, nose mounting insulation, automatic threading catheters, eye mold base assembly, pressure gauge and chuck ER group, eyes fixed mold plate and so have the cash or stock.

常用产品：黄铜线、包锌线、抛光线、过滤器、离子交换树脂、导电块、导丝模、绝缘板、导轮、轴承、喷水嘴、除锈剂K200、KC12、放电眼模、放电铜管、放电夹头、皮带以及强力磁石、夹具、押板、螺丝等均有现货，其他非常用产品：张力马达碳刷、上机头蛇腹套、辅助喷水头、子母型喷水头喷座和母座、喷水头连接铜环、喷水头盖板、出线轮主轴副轴、夹线轮、强力轮、流量计、给电板固定垫、出线轮、引线轮、齿轮、出线轮轴心、导管、垂直度计连接线、极间线、接地线、引导线轮、微动开关、上机头、眼模座、滚轮座、整流环、机头绝缘固定座、、自动穿线导管、眼模座总成、压力表以及ER夹头组、眼模固定板等有现货或备货。

In the chapter two, we will recall some basic concepts and propertiesin commutative algebra and homological algebra. In the chapter three,wewill defineⅠ-flat modules and give equivalent conditions: one module M isanⅠ-flat R-module if and only if for all prime ideals p,SuppTor_1~R

本文首先介绍了关于平坦模的一些基本概念和性质，而后将平坦模的概念在一定意义上进行推广，定义了I-平坦模，并得到了模M是I-平坦R-模的等价条件：对R中所有素理想p，有suppTor_1~R

Computer carving molds categories: high frequency mode, bronzing die, metal plastic mould, metal stamping letters die, metal crafts sculpture, greeting cards embossed die, plastic gift-chapter, line version of a wave soldering lead-free governance with a furnace, such as three-dimensional relief Three-dimensional sculpture of computer processing… stickers printed categories: all kinds of stickers printed labels, stickers, bar code standard, easy shredding, arrow superscript, subscript cloth clothing shoes and hats, water standard, such as India Mark… Rubber Tag Categories: Crystal Dijiao, micro-injection, drops Chapter plastic raw materials, etc… silicone series categories: Japan KE-1310ST, KE-1310S, JX-860, JX-850 and its color paste, auxiliary agents and special tools… PVC raw materials Series: highly transparent material, PVC powder paste, DINP oil, light and heat stabilizers, hardware oil, PVC heat-ink color paste… Series: low-temperature heat-ink (round, rectangular, smooth, dumb noodles) and color color paste , Etc… flocking Series: Flocking paper, flocking oar, flocking Transfer, etc… machines Series: automatic multi-color flocking machine, planting colorful three-dimensional plastic machine, silicone package molding machines, high-frequency embossing machine, rubber Plastic signs pipeline equipment…---- since we have since opened in accordance with the philosophy, in order to meet customer needs and quality to achieve customer satisfaction.

电脑雕刻模具类：高周波模、烫金模、五金塑料模、五金冲压字母模、金属工艺品雕刻、贺卡压花模、礼品胶章模、线路版过波峰焊无铅过炉治具、立体浮雕等各种三维电脑雕刻加工…不干胶印刷类：印刷各种不干胶标签、贴纸、条码标、易碎纸、箭头标、服装鞋帽布标、水标、印唛等…橡塑标牌类：水晶滴胶，微量射出，滴塑胶章等…矽利康原料系列类：日本KE-1310ST、KE-1310S、JX-860、JX-850及其色浆、辅助剂和专用工具等…PVC原料系列：高度透明料、PVC糊脂粉、DINP油、光热稳定剂、硬油、PVC色浆…热固油墨系列：低温热固油墨(圆角、直角、光面、哑面)和彩色色浆等…植绒系列：植绒纸、植绒桨、植绒转印纸等…机器系列：自动多色植绒机、立体多彩植胶机、矽利康整套成型机、高频压花机、橡塑标牌流水线设备等

After having compared the cupola furnace with electric arc furnace on the characteristics of the process of producing spheroidal graphite cast iron steel ingot module and their application effects, the results show that it will prolong the life of steel ingot module and improve the quality of steel ingot by applying arc furnace to melt spheroidal graphite cast iron steel ingot module.

电弧炉技术在球墨铸铁钢锭模生产上的应用赵海兵任元和李梅曹志张涛摘要将冲天炉和电弧炉这两种生产球墨铸铁钢锭模的工艺特点及应用效果进行对比，结果表明，采用电弧炉冶炼球墨铸铁钢锭模能够提高钢锭模使用寿命，改善钢锭质量。关键词球墨铸铁模耗A

In addition, we study the reduced minimum modulus of the generalized Drazin inverse of an operator on a Banach space and give out lower and upper bounds of the reduced minimum modulus of an operator and its generalized Drazin inverse, respectively.

第四章讨论了左乘算子L_A∈BB(H的约化极小模与A的约化极小模的关系；讨论了广义Drazin可逆算子的广义Drazin逆的约化极小模的上下界及广义Drazin可逆算子的广义Drazin逆的约化极小模与算子的约化极小模的关系。

Knowing current talented person, our person follow realizes own biggest ideal with promote principle that we combine together, make everybody very much our development be space, environment that own great ideal that leading, but the feedback is a reasonable spirit feature to talented person with our economic performance, providing to each where there is a will development with term, here the way descend our spirit feature with the exaltation that economic performance got the continuous changes and improvements.

对于现有人才，烟汽模人遵循实现自己的最大理想与发扬光大烟汽模相结合的原则，使每个人都认识到烟汽模的发展就是自己的伟大理想，而反馈给人才的是合理的精神面貌和烟汽模的经济效益，提供给每个有志者发展的空间、环境和条件，在此方针的指导下烟汽模人的精神面貌和经济效益得到了日新月异的提高。

An area efficient modular arithmetic processor was developed that is capable of performing RSA public-key cryptography and other modular arithmetic operations as a coprocessor.

为以较小的面积代价实现RSA公钥密码算法及其他一些算法所需的求模、模加、模乘、模幂等运算，该文设计了一种可作为协处理器使用的模运算处理器。

The metal mold design now adopt a form of one mole but six cayities ,this way can improve the efficiency;the mold's joint face is the ball's neutral plane,that makes the mold opened convenient;In the gating,the runner and the riser is the same ,and this design adopt scum riser,that make sure a better routing and make sure the casting's feeding;the mold use gravity to lockwasher itself;the core's material is quartz sand,and spread high tempearature resistant dope on it;In the design, same taper in the guide bush of the core box is needed to make sure open the mold easily;The insert blocks of the core box are made by numercial control processing,this way reduce the cost of production; the scale division positioner make sure the same specification has better interchangeability,also,as all the machining can be finished on the general machine tool,it make the cost low,so it can be spreaded abundant in the medium and minor enterprise;when workout the mold's processing technology,this design adopt the rough's two end plane as benchmark,the ball cavities are machined by scale division positioner;then use Autocad,Pro/e to draw planar and three dimension blueprint,use Pro/e to make three-dimensional animation.

本次设计的群铸模具采用一模六腔形式，生产效率高；模具分型面选择磨球的中性面，使得分模方便；浇注系统采用浇冒口一体形式和集渣包设计，保证了良好的加工工艺和补缩；锁模方式为重力锁模；砂芯采用石英砂，并在表层涂以耐高温涂料；芯盒导套选择一定的锥度，使取模容易；芯盒镶块运用数控加工，降低了生产成本；分度胎具保证了同种规格模具具有良好的互换性，而且因为所有加工基本都可以在普通机床上完成，生产成本低，可以为中小型企业普遍采用；在加工工艺编制过程中，采用两端面互为基准，球腔用专业夹具加工；Autocad，Pro/e分别制作了模具的二维和三维立体图，并运用Pro/e制作了三维动画演示。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失