性能说明

To give the definition of the mass concrete and to concrete\'s cracks together with practical meanings of control ,and give a brief review on the research in the field at home and abroad, at last, methods to control temperature crack of the mass concrete from several aspects such as design measures,concrets material, construction schedules.etc are summed up; To explain the physical mechanics of the concrete and computing methods-Difference Method and Finite Element Method, and illustrate the application of their specific methods repectively;Several temperature factors that can influence the temperature stress of mass concrete baseplate are analyzed. The influence degree of temperature factor can be got through the ANSYS simulation computation the control of temperature can control the temperature stress, consequently control the temperature crack of mass concert baseplate; through the influence of the crack resistance ability of mass concrete baseplate which takes the reinforcement as a part is analyzed. By ANSYS simulation, the best suited volume ratio of reinforcement is found out, at same time the layout of reinforcement with the same volume ratio can also affect the resistance ability of mass concrete baseplate. Sum up of above analysis, anti-crack function of steel bar in early mass concrete baseplate is obvious, so it\'s necessary to consider beneficial effect of construction steel bar in research of temperature control on mass concrete baseplate.

本文先容了大体积混凝土及混凝土裂缝的基本概念，对国内外在这个领域里的研究现状作了扼要叙述，并从结构设计、混凝土材质、施工措施等方面总结了大体积混凝土温度裂缝控制的方法及防止措施；阐述了混凝土的基本物理力学性能，总结了大体积混凝土温度计算的方法——差分法和有限元法，并分别举例说明其具体应用的方法；分析了影响大体积混凝土底板温度应力的几种温度因素，利用ANSYS模拟计算，得出了每种因素的影响程度，通过分析提出了在这几种温度影响因素下如何通过控制温度以达到控制温度应力从而来控制裂缝的具体建议；针对大体积混凝土基础底板中配筋的不同对混凝土底板抗裂能力的影响不同，利用ANSYS进行模拟分析，得出底板中最合适的体积配筋率，同时分析了在相同体积配筋率下钢筋的具体布置对大体积混凝土基础底板抗裂能力的影响，分析表明，配置钢筋对混凝土结构的开裂阻止作用明显，在研究大体积混凝土温度裂缝题目时，要考虑钢筋在其中的有利作用。

It includes determination of properties of the acid protease and lipase, application of acid enzymes to processes of bating pickling pelt and wet blue of sheepskins, analysis of activities of collagenase in acid protease and trypsin. Comparison was conducted to acid bating and common bating. Orthogonal experiments were used to determine influence of some factors in acid bating on qualities of leather. Scanning electronic microscope was used to observe separating of collage fibers.

对酸性蛋白酶、酸性脂肪酶的性能进行了测定；将其用于绵羊服装革生产的酸性软化及蓝湿皮软化中，利用正交试验法研究了酸性酶软化各因素对成革质量的影响，并与常规酶软化进行了对比；用扫描电镜观察了酸性酶软化后胶原纤维的分散情况；对酸性蛋白酶的分子量进行了测定，对比了酸性蛋白酶与胰酶中的胶原酶活力，以说明酸性酶软化与胰酶软化对胶原性质的影响。

In chapter two and chapter three of this paper, much adjustment method and process of third-order and forth-order triangulation and bench mark of Shandong province are discussed.The construction goal, function design, system performance, system characteristic, and important problem exploitation are discussed in database design segment.

数据库系统设计部分介绍了数据库系统的建设目标、功能设计、系统的性能、特点以及研究开发过程中的重要问题说明等内容，对数据库系统进行了总体评价。

Finally, the engine performance test results on the engine test bench show that the inlet , exhaust and turbo charging system can meet the engine performance requirement.

最后通过整机台架性能试验说明，所采用的进、排气增压系统能满足设计要求。

By simulation, it is found that both algorithms performed better than FIFO and LRU in terms of initial buffer delay, movie replicas number and dependency on the root with various peers＇ arrival interval.

同LSB（1east sent bytes）算法相比，某些场景中sD的启动延迟减少了约40％，而REP在副本数量方面远远超过LSB的结果，说明在P2P网络流媒体服务中使用SD和REP缓存置换算法有助于提高系统性能。

Through above study, the theoretical analysis of the inherent fault tolerance of feed-forward neural networks has been extended from hard-limit activation functions to differentiable activation functions; 2. By using above method, fault tolerance of discrete Hopfield feedback neural networks have been also analyzed. It means that the above method can be applied not only for feed-forward neural networks but also for feedback neural networks; 3. For the feed-forward neural network with the Sigmoid activation function, Chebyshev Inequality method was presented.

这项研究将以前仅限于对硬限幅作用函数前向神经网络固有容错性能的理论分析推广到具有可微作用函数的前向神经网络； 2 针对离散型Hopfield反馈神经网络，利用上面提出的方法，对其同样进行了容错性分析，得出许多有用的结论和计算公式，说明上面提出的方法不仅适用于前向神经网络，同时也适用于反馈神经网络； 3 针对具有Sigmoid作用函数的前向神经网络提出了一种切比雪夫不等式法。

Both sides of sealing performance are choiceness and the torque is small.

详细说明 1、双向密封性能优良，扭矩值小。

This title will do the architecture design for the office building and give some illumination , will tell of the disposal of structure and draw the reasonable columniation plan according to the architecture design and the correlative codes.

本文将对办公楼进行建筑设计，并对设计给予相应的说明，详诉本办公楼的结构布置，根据建筑设计和相关规范条款给出合理的柱网图；在综合考虑了结构在各种恒载、活载、风荷载以及地震荷载作用下的情形后，详细的分析了结构在风荷载和地震荷载作用下的横向和纵向的各种性能，具体的计算了结构的梁、柱的弯矩、轴力、剪力，并进行了相应的内力组合，并由此进行了框架配筋部分，最后完成了柱下独立基础的有关计算。

In real-time embedded control systems, command cycle on the performance of the system have a critical influence.

详细说明：在实时嵌入式控制系统中，指令周期对系统的性能有至关重要的影响。

Rice wireless communications system channel simulation for system performance studies.

详细说明：无线通信系统中莱斯信道仿真，用于系统性能的研究。

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。