查询词典 concave function

Under the condition of small angle misalignment, the effecton output beam's near-field distribution of CO2 lasers with two-dimensional axisymmetric-fold combination cavity was ascertained after analyzing and simulating beams combination output based on the axis determination of misaligned plano-concave and concave-plano-concave cavity resonator.

为了研究小角度失调对二维轴对称－折叠组合腔CO2激光器输出光束的近场分布的影响，在利用矩阵理论确定平凹谐振腔和凹－平－凹谐振腔失调后的光轴的基础上，采用光束并和思想，对输出光束进行了理论分析和模拟。

Stainless steel concave end knurling;DIN915 Stainless steel cylindrical end; DIN914 Stainless steel pointed end; DIN916 Stainless steel concave end; DIN913 Stainless steel flat end; DIN551 Stainless steel slotted point; DIN906 Stainless steel oil plug,semi-circular; Stainless steel two-end hexagonal non-standard; Brass internal hexagonal,cross,non-standard; Brass wobbler,nickel-plated; Stainless steel ,alloy steel heat-resistant; Alloy steel zinc-plated; Alloy steel semi-circular; DIN915 Alloy steel cylindrical end, Philips screw non-standard; DIN916 Alloy steel concave end;DIN914 Alloy steel pointed end;DIN906 Alloy steel oil plug; Corrugated ball; Two-end internal hexagonal non-standard; Textile machine screw-nail; Tool-post screw-nail

不锈钢凹端滚花；DIN915 不锈钢柱端；DIN914 不锈钢尖端；DIN916 不锈钢凹端；DIN913 不锈钢平端；DIN551 不锈钢一字槽；DIN906 不锈钢油塞、半圆；不锈钢2头内六角非标；黄铜内六角、十字槽、非标；黄铜梅花头、镀镍；不锈钢、合金钢耐落；合金钢镀锌；合金刚半圆；DIN915 合金钢柱端、十字槽、非标；DIN916 合金钢凹端；DIN914 合金钢尖端；DIN906 合金钢油塞；波珠；2头内六角非标；纺织机螺钉；刀架螺钉。

In this design introduced the transmission covers the punch holes the ramming craft analysis, the craft plan formulation, arranges the specimen map design, the always ramming strength computation and the center of pressure computation, the cutting edge size computation, the spring, the rubber computation and selects, the raised mold, the concave mold or the convex-concave mold structural design and all that die the components structural design, draws up the mold assembly drawing and the work detail drawing, the compilation design instruction booklet, fills in the ramming craft card and the work components machine-finishing technological process card, raised pays attention to, the concave mold coordinate processing.

本设计中介绍了传动盖冲孔的冲压工艺分析，工艺方案的分析和制定，排样图的设计，总的冲压力计算及压力中心的计算，刃口尺寸的计算，弹簧的计算和选用，凸模、凹模或凸凹模结构设计以及其他冲模零件的结构设计，绘制模具装配图和工作零件图，编写设计说明书，填写冲压工艺卡和工作零件机械加工工艺过程卡，注意凸、凹模的配合加工。

In this design introduced the transmission covers the punch holes the ramming craft analysis, the craft plan formulation, arranges the specimen map design, the always ramming strength computation and the center of pressure computation, the cutting edge size computation, the spring, the rubber computation and selects, the raised mold, the concave mold or the convex-concave mold structural design and all that die the components structural design, draws up the mold assembly drawing and the work detail drawing, the compilation design instruction booklet, fills in the ramming craft card and the work components machine-finishing technological process card, raised pays attention to, the concave mold coordinate processing.

摘要本设计中介绍了传动盖冲孔的冲压工艺分析，工艺方案的分析和制定，排样图的设计，总的冲压力计算及压力中心的计算，刃口尺寸的计算，弹簧的计算和选用，凸模、凹模或凸凹模结构设计以及其他冲模零件的结构设计，绘制模具装配图和工作零件图，编写设计说明书，填写冲压工艺卡和工作零件机械加工工艺过程卡，注意凸、凹模的配合加工。

This paper presents the present development of rape combine home and abroad and the running principle of typical threshing and separating system. And comparative experimental investigations are done between different threshing and separating systems, such as rasp-bar-plate-tooth drum with grid concave, axial-flow -short-rasp-bar drum with grid concave and spike-tooth drum with grid concave.

本文详细介绍了国内、外油菜联合收割机研究现状及典型的物料脱粒分离系统的工作原理，对油菜联合收割机不同的脱粒分离部件组合的脱粒分离系统——纹杆—板齿-栅格凹板、短纹杆—栅格凹板、钉齿—栅格凹板脱粒分离系统进行了对比试验与研究。

Comprehensive experiments are carried out in a half-external cavity He-Ne laser and the "cat's eye" reflector cavity, plane-concave mirror cavity and concave-concave mirror cavity.

以功率稳定性为参考指标，做了一系列对比实验来对比&猫眼&谐振腔He-Ne激光器和现有He-Ne激光器在失调特性、温度漂移方面的性能。

Though comparing Canny operator and center B spline dyadic wavelet, the following conclusion is proven in this dissertation: a Center B spline function has tight support and Canny operator hasn't. b Center B spline function asymptotic convergence to Gaussian function and the derivative of Center B spline function asymptotic convergence to Canny operator. c The derivative of fourth order center spline B function is more suitable as a optimal edge detector than Canny operator. d Center B spline function can balance the smoothing and approximation of original data, and the fourth center B spline function is the only optimal solution of two order smoothing problem. e The error between the valve of time-frequency uncertainty of the fourth center B spline function and the lower bound of time-frequency uncertainty does not exceed 0.143% of the lower bound. f The derivative of center spline B function can construct a stability dyadic wavelet and can give a fast algorithm for multiscale edge detection, but Canny operator can do neither.

作者给出了Canny算子与中心B样条二进小波严格的比较证明，得出如下结论：a中心B样条函数具有紧支集，Canny算子不具有紧支集。b中心B样条函数的极限收敛于高斯函数，中心B样条函数的导数收敛于Canny算子。c四阶中心B样条函数的导数比Canny算子更接近最佳边缘检测滤波器。d中心B样条函数比高斯函数更能兼顾对原函数平滑和逼近的折中要求，并且四阶中心B样条函数是二阶逼近问题的唯一最优解。e四阶中心B样条函数的时频测不准关系值与时频测不准关系下界的逼近误差不超过0.143％。f中心B样条函数的导数可以构成稳定的二进小波，存在快速的多尺度算法；而Canny算子不构成稳定的二进小波，无法给出快速的多尺度算法。

The problem of multi-objective usually meet many conflict each other and can not use the objective of the same standard unit, then to employ membership function of fuzzy theory,at first each objective function to change fuzzy set and express with membership function, membership function include the maximum constraint, minimum constraint, the decrease function of monotonic property, to become optimal of the multi-objective function, but still to scanty of weighting value with regard to adjustment of objective function, thus this thesis proposes the method of combine orthogonal arrays and particle swarm optimization to solve the problem of multi-objective optimal power flow, each objective function separately add weighting value, to setting each weighting value of objective function in order to the result of anticipating.

多目标最佳化的问题通常会面临到许多互相冲突且不能用同ㄧ标准单位的目标，於是利用模糊理论中的归属函数，首先将各目标函数转换成模糊集合并以归属函数表示，归属函数包含了最大限制值、最小限制值、单调的递减函数所组成，将各目标函数利用归属函数表示，形成单一目标函数的最佳化，但是仍缺乏权重值对於目标函数的调整，於是本篇论文提出ㄧ种权重值设定与粒子群优演算法的方法去解决多目标最佳电力潮流的问题，将各目标函上分别加上权重值设定各目标函数的权重值，得到预期的效果。

Along with the time development, the computer technology more and more thorough various trades and occupations, have provided thorougher and a convenient service for the general users In order to realize raises department's working efficiency, uses the resources fully, reduces the nonessential manpower, physical resource and financial resource goals and so on disbursement, presented various information management system The paper will design university student's dormitory information management system's Web and realizes using the solution The university student's dormitory information management system is one safe and the highly effective proprietory system, designs specially for the information engineering institute This system has used many technologies, for instance JSP, JDBC, Web service and so on The proprietory system use's database is SQL the Server 2000 databases The university student's dormitory information management system's major function includes: May realize to the student's dormitory information inquiry function, including fast inquiry function and classified inquiry function; To the student's dormitory information's input function, the revision function, deletes the function and the statistical function Realizes the dormitory Control section through the system above function regarding the student's dormitory information current management, namely facilitates the dormitory administrative personnels to keep abreast of the student lodging situation and the billeting situation comprehensively promptly; Has provided some simple data inquiry for the user and outputs each kind of information and so on

随着时代的发展，计算机技术越来越深入各行各业，为广大的用户提供了更为周到和便捷的服务。为了实现提高部门的工作效率，充分利用资源，减少不必要的人力，物力和财力的支出等目的，出现了各种各样的信息管理系统。论文将设计一个高校学生公寓信息管理系统的Web应用解决方案并予以实现。高校学生公寓信息管理系统是一个安全和高效的专用系统，专为信息工程学院设计。这个系统使用了很多技术，比如JSP，JDBC ，Web服务等。专用系统使用的数据库是SQL Server 2000 数据库。高校学生公寓信息管理系统的主要功能包括：可以实现对学生公寓信息的查询功能，包括快速查询功能和分类查询功能；对学生公寓信息的录入功能，修改功能，删除功能和统计功能。通过系统上述功能实现公寓管理部门对于学生公寓信息的日常管理，即方便公寓管理人员及时全面地掌握学生住宿情况及公寓分配情况；为用户提供了一些简单的数据查询并输出各种信息等。

Under the concave transaction costs function, using the variance of profolio return rate to express profolio risk, and taking the risk-return combination difference as the objective function, we propose Mean-variance D.C- integer optimization model under concave transaction costs and minimal transaction unit constraints.

2考虑凹交易费用函数，用投资组合收益率的方差反映组合风险，以风险-收益的组合差作为目标函数，提出了考虑交易费用及最小交易量的均值—方差D.C-整数优化模型。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48