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Book this introduce design entirely electric to control and pursue, ladder-shaped picture, chronological chart, wiring diagram, flow chart and PLC procedure, should design and use bulb come and realize whole simulation course of experiment, in the course of designing, have done a lot of relevant experiments , for example: Only according to get up and park PLC of circuit design, crossway lipstick PLC of green light design.

本书介绍了整个设计的电气控制图,梯形图,时序图,接线图,流程图和 PLC 程序,该设计运用了灯泡来实现整个实验的模拟过程,在设计过程中,做了许多相关的实验,例如:单按起停电路的 PLC 设计,十字路口红绿灯的PLC设计。

Some conclusions were summarized as following: wood、 paper、 fabric and kitchen rubbish have the resemble pyrolysis characteristics; it is obvious that plastic"s decalescence happened during it"s pyrolysis process; the range of τ_max from great to small in sequence is plastic、 rubber、 fabric、 paper、 kitchen rubbish and wood.

其次,本文对垃圾典型组分的快速热解特性作了研究,并同程序升温时的热解特性作了比较,得到以下一些结论:木屑,纸屑,织物和厨余,其热解特性具有相似之处,微分转化率曲线均表现为单峰曲线;塑料在反应时存在较明显的吸热现象;τ_max(最大失重率所对应的时间)由大到小依次是塑料,橡胶,织物,纸屑,厨余,木屑。

This paper studies the main geometrical parameter such as angle, height, width, stagger and the upper width in dentation and trapezoid flow path, firstly, uses the single-phase numerical simulation of the computational fluid dynamics technique to analyse the influence of different geometrical parameter on discharge coefficient and flow state exponent of drip emitter. Secondly, uses the two-phases numerical simulation of CFD (1% sand content ) to analyse the influence of the above mentioned geometrical parameter on the contribution regulation of sand and anti-clogging performance. Thirdly, uses the PIV ( particle Tracking Velocimetry ) technique which can see the small-scale flow path to observe and test the trajectories and velocities of solid particles in labyrinth flow path, and analyses the basic factors which can influence the movement characteristic of solid particles and the flow state in flow path.

本文以齿形流道、梯形流道为主要研究对象,以流道转角、流道高,流道宽、偏差量及梯形流道上底宽为主要结构参数,首先应用 CFD 单相流数值模拟技术对不同结构参数灌水器流道水力性能进行模拟,分析了不同结构参数对流态指数和流量系数的影响,其次,应用 CFD 两相流(含沙量为1%)数值模拟技术分析了结构参数对含沙量分布规律和抗堵塞性能的影响,然后,应用 PIV 可视化测试方法测试了固体颗粒在流道内运行轨迹及速度,分析了影响固体颗粒运动特性及流道内流体流态的基本因素,最后,对上述流道结构形式通过模具加工及滴灌带试制,进行了标准化测试( GB/T 17187-1997 农业灌溉设备滴头技术规范和试验方法与 ISO 标准 ISO /TC23 /SC18 /WG5N4短周期堵塞测试程序),测试结果验证了 CFD 模拟结果,并提出了迷宫结构流道灌水器的抗堵塞设计方法。

Rayleigh Channel is the Doppler shift of the multipath channel and single-channel tracks of Matlab simulation program.

这是瑞利信道中有关多普勒频移的多径信道和单径信道的相关matlab仿真程序。

The establishment of elastic collision mechanism between hydrogen molecules and carbon nanotube walls and arithmetic design;? molecular dynamics simulation details of hydrogen physisorption in single walled carbon nanotube arrays and program design;? the acquirement and analysis of computer simulation results, where the influences of tube diameter, distance between tubes, temperature and pressure on hydrogen physisorption in SWCNTA are investigated in detail.

主要内容为:①巨正则系综分子动力学模拟元胞的创建;②氢分子与碳纳米管壁弹性碰撞机制的建立及算法设计;③碳纳米管阵列物理吸附储氢的分子动力学模拟细节及程序设计;④计算机模拟研究结果的获取与分析,重点研究了管径、管间距、温度和压强对单壁碳纳米管阵列物理吸附储氢的影响。

By rational designs of mechanical structure and plan, the system uses PLC as the core of control on site, and accomplishes control of the installment and debug of the system step by step by software configuring design of the touch panel. Industrial computer, the centre of monitor, control and management of the system, composes epigyny and hypogyny machines' real-time monitoring and controlling system with PLC by designing the communicative model and program, and accomplishes man-machine dialogue in form of suppositional panel by designing supervisory software. Meanwhile, we also adopt client/server model and realize long-distance supervision of impact sensitivity experiment by program designing.

系统通过合理的机械结构和方案设计,采用PLC作为现场控制核心,通过对触摸屏软件组态设计,完成了系统现场安装、调试时的单步控制功能;作为系统的监控、调度中心的工控微机通过通讯模式和程序设计,与PLC组成上、下位机实时监控系统,间接地实现了对撞击感度试验的监控,并通过上位机实时监控管理软件的设计,以虚拟面板的形式较好地实现了人机对话;采用客户机/服务器模式,通过软件编程实现了撞击感度试验的远程监控功能。

In the study,univariate combining ability anlysis diall-cross design of Griff ing s breeding method 2 by using SAS programs is solved , an example of rice is also provided to illustrate the detailed SAS calculation. This method is universally suitable for combining ability analysis .

本研究以谷粒实例示明具体SAS计算过程,解决了Griffing双列杂交育种法Ⅱ配合力单变元统计分析的SAS实施,为作物遗传育种实践提供了一种实用可靠、操作简便的SAS程序,此法具有国际普遍适用的价值。

By using hall sensor,we have developed a high-speed magnetic field testing system with USB2.0 interface.The software has been developed and the testing system has been designed,in which the center distance of the helmholtz coils is adjustable.

利用霍尔传感器件,自带 USB2.0以及10位快速A/D的高性能单片机C8051F340,研制了单芯片高速磁场数据测量装置,编写了磁场数据采集处理程序,设计了中心距可调的亥姆霍兹线圈,并用所研制的仪器进行了轴向磁场分布测量。

When you click the Sample Application Help and How-to, you will be shown the following two categories.

当您单击示例应用程序帮助和操作方法,你将看到以下两个类别。

This paper studies the integration of advanced mathematics and language of computer, an example Hyperboloid of One Sheet is given.

以二次曲面为例,探讨了计算机语言与高等数学教学的整合问题,并给出了一个单叶双曲面的应用程序编写实例。

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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

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。