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In this paper, three methods for determining the natural background of Υ-radiometers are studied: the methods of water-surface,lead-screen and submersion.

本文讨论了三种测定γ辐射仪自然底数的方法：水面法、铅屏法和水中法。

On-screen progress of clean and sweep process, which can be aborted at any time!

提供可以在任何时刻终止清理操作的屏显清理和删除处理过程的功能。

Our company is a waste recovery and sale of the world brand new and second-hand professional electronic components and electronic equipment suppliers, including the public, industrial grade, microprocessor, microcontroller, memory, linear circuits, logic circuits , power modules, connectors, NI-GBIP card, ICT switch plate, AC \ DC power supply, screen generators, and various specifications oscilloscope, spectrum analyzer, such as high-tech products covering electronic communications, instrumentation, aerospace , medical equipment and other industries we adhering to the "sincere cooperation, mutual good faith" concept, with good product quality and after-sales service, competitive price advantage, as well as the quick and timely delivery cycle, the enthusiasm for the vast number of clients to provide comprehensive quality supporting services.

我公司是一家经营回收兼销售世界全新和二手品牌的专业电子元器件和电子仪器的供应商，提供包括民、工业级、的微处理器、微控制器、存储器、线性电路、逻辑电路、电源模块、接插件、NI-GBIP卡，ICT开关板，AC\DC电源，视屏产生器和各种规格的示波器，频谱分析仪等高新技术产品，覆盖电子通讯、仪器仪表、航空航天、医疗设备等行业我们秉承"精诚合作、诚信互惠"的理念，凭借良好的产品质量和售后服务，有竞争力的价格优势，以及快捷、及时的交货周期，热情为广大客户提供全面优质的配套服务。

Options:Extra options include selecting a background in fullscreen mode and toggling the display of a character's helm, cloak, or tabard.

选项：额外的选项包括选择在全屏模式下背景以及切换人物的头盔，斗篷，或者战袍显示

In this paper, a new method, biasing SH panels, was developed to improve the situation of flow velocity deviation of tangentially fired boiler horizontal gas pass .

为改善由于四角喷燃锅炉残余旋转引起的水平烟道速度分布不均匀的状况，介绍了一种将分隔屏偏置的新方法。

The result of the test was consistent with the result of numerical simulation very well .This shows that numerical method is viable to the tangentially fired boiler using the commercial software FLUENT .

同时对锅炉试验模型流场的测量，表明得出的锅炉屏区气流速度分布与数值计算结果吻合良好，这说明运用FLUENT 软件对四角切圆燃烧锅炉进行数值模拟是可行的。

Order for students to m aster the knowledge of reacto r system , physics, therm al

设计部分是将所学的有关核反应堆系统、物理、热工、屏

The research work of this paper is divided into five parts: The first ,according to the work characteristics of ship's auxiliary boiler, this paper is to design applied project in the automatic control system of ship's auxiliary boiler; The second, according to the work request of the cargo winch of alternating three-speed change-pole speed-adjusting, this paper is to determine adopting the method of the PLC control; The third, this paper is to design PLC application in three -phase induction motor control, to give the ladder chart, program and input and output circuit diagram; The fourth, this paper is to research the method of the ship's combined starting screen automatic control with the PLC; The fifth, this paper is to inquire the possibility of apply the PLC in ship's engine room surveillance system; According to the comprehensive analysis of above actual example of ship's auxiliary machinery automatic system with the technique of PLC; not only can use the technique of PLC to replace traditional relay-contactor control technique in ship's auxiliary machinery automatic system, but also can get the conclusion of the former is more dependable and more clever than the latter, the maintenance is more convenient, thus develop a new path for ship automation.

本文研究的工作主要包括五个部分：第一，根据船舶辅锅炉的工作特点，设计PLC在船舶辅锅炉自动控制系统中的应用方案，主要有PLC选型及输入输出点的设计，画出系统控制梯形图并分析工作原理；第二，根据交流三速变极调速起货机的工作要求，确定采用PLC控制的方法，进行控制系统的硬件设计和软件设计，并分析工作原理：第三，设计了PLC在三相异步电动机控制中的应用，给出了控制梯形图、程序及输入、输出接线图；第四，研究了用PLC实现船舶组合起动屏自动控制的方法，进行了系统的电源设计和软件设计，给出系统工作流程图；第五，探讨了船舶机舱监视系统应用PLC的可行性，将继电器报警线路改为用PLC控制报警，给出系统硬件图和软件梯形图，并分析了PLC机的选型、抗干扰和应用PLC的经济效益和社会效益等问题。综合以上船舶辅助机械自动控制系统采用PLC技术的实例分析，可以得出船舶辅助机械自动控制系统不但可以使用PLC技术取代传统的继电器接触器控制技术，而且前者比后者更可靠、更小巧，维护保养更方便的结论，从而为船舶自动化开辟了一条新的路径。无忧毕业设计网 www.5ubs.cn

With a simple key combination, Tilda will gracefully slide down from the top of the screen, and present a full terminal.

通过简单的组合键，Tilda就会华丽地从屏幕顶部滑落下来，并且全屏显示内容。

With a three-screen installation, Heliocentric uses time-lapse photography and astronomical tracking to plot the sun's trajectory across a variety of landscapes.

金乌展上的作品都是作者利用三屏相机的延时拍摄及天文跟踪技术，走遍大江南北，追逐太阳拍摄而成。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。