查询词典 three birds

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

Firstly, the paper carried out test study base on the pseudo-static test under horizontal loads on four two-spanned model members of FSMRCSS, including three 1/2-scaled two-storeyed models and one 1/3-scaled three-storeyed model. By the test study, the paper analyzed the test results, including analysis on mechanical property of the constructure under vertical loads, and failure mode, deformation capacity, aseismic performance under horizontal loads and constant vertical loads. The paper also compared LFSWSUMS with FSMRCSS on aseismatic property.

本文首先对三个两跨两层和一个两跨三层的底部大空间框支密肋复合墙结构的1／2和1／3比例模型进行伪静力试验研究，通过对底部大空间框支密肋复合墙结构在竖向荷载及与水平低周反复荷载共同作用下的受力性能的试验研究，探讨了结构的变形性能、滞回耗能和破坏形态，并与框支砌体结构进行对比分析。

First of all, the paper carried out test study on four two-spanned model members of FSMRCWB, including three 1/2-scaled two-storeyed models and one 1/3-scaled three-storeyed model. The paper analyzed the test results, including analysis on mechanical property of the composite wall beam under vertical loads, and failure mode, deformation capacity, aseismic performance under horizontal loads and constant vertical loads. Secondly, the nonlinear property of concrete is studed and the nonlinear models of FSMRCSS is builded by ANSYS. Last, The paper studies the result of ANSYS, which mainly includes the loading-displace curve of FSMRCSS under horizontal loads and constant vertical loads, the mechanics of arch under vertical loads lonely and under horizontal loads and constant vertical loads respectively, and status of the distribution and changing of vertical stress and cross shear on the surface of the suporting beam, and the influence of span ratio and hole.All in all, the caculating results are in good agreement with the test results.

本文首先进行了三个1/2比例的两跨两层和一个1/3比例的两跨三层的框支密肋复合墙梁的模型试验，分析了框支密肋复合墙梁在竖向荷载作用下的受力性能，以及在竖向荷载与水平低周反复荷载共同作用下的受力性能、变形性能、滞回性能、耗能系数及破坏形态；其次，研究了混凝土的非线性特性，建立了框支密肋复合墙梁非线性有限元模型，并借助大型通用有限元软件ANSYS进行计算；再则，进行了非线性有限元结果分析，主要研究框支密肋复合墙梁在竖向荷载与水平地震力共同作用下的荷载位移曲线，分析在竖向荷载单独作用下和在竖向荷载与水平地震力共同作用下墙梁的拱作用，托梁顶面的竖向应力和横向剪应力分布及变化情况，并讨论跨度比、洞口对墙梁拱作用和托梁顶面的竖向应力的影响。

In addition, several examples showing the realization of three-variable threshold logic function with three-variable universal-threshold-logic-gates are given.

通用阈值逻辑门是一种通用的阈值逻辑门，可以通过改变它的输入、输出的接法实现所有的给定变量数的阈值逻辑函数。

In three years time Marquez has evolved from a featherweight contender trapped in boxing limbo to a three-division titleholder who is regarded as the second best boxer on the planet behind his rival Pacquiao.

仅仅用了3年，马奎兹就从一个羽量级拳手成为三个级别的拳王，并且被公认为仅次于对手帕奎奥的世界第二强拳手。

Hong-Chih Kuo limited the Mets to one run in seven innings and hit the third of three homers on three pitches in a victory on Tuesday.

郭泓志在对大都会七局中只失一分，而且打了三连发全垒打堛熔胪T支，爲星期二这场赢得了胜利。

Analyzed errors of auto-reclosing synchronization and offered the countermeasure for the errors; analyzed the misoperation reason of the high-voltage line microcomputer reclosing device and discovered the root of errors and put forward three solutions; compared the three methods and selected the best one to run in practice.

论文对自动重合闸检同期所存在的误区进行了分析与研究，为走出误区提供了对策；对高压输电线路微机重合闸装置所出现的误动作原因进行了分析研究，找到了问题的根源，提出了三种解决问题的方法，并对每种方法的利弊进行了比较，选取最优方案投入现场运行。

The experiment indicated that these three measurements were suit for moving plane object detection. This is the case when car passes the tollbooth. 4、If object is existence, object segmentation is needed. Three planar object segmentation techniques were proposed.

因此，我们研究了大视差情况下平面物体的检测，定义了聚焦模糊、视差方向线性度及图像相关测度这三个测度，实验表明这三个测度在物体的存在性检测方面是适用的。

He wrote five piano concertos, three symphonies (including the "Organ" Symphony), two cello concertos, and three violin concertos; his tone poem Danse macabre (1874) and the suite Carnival of the Animals (1886) are widely known.

他还写了五首钢琴协奏曲、三部交响乐和两部大提琴行政区。他的诗曲《死之舞》（1874）和组曲《动物狂欢节》很有名。

No significant results are found on the interaction of language and format to reading comprehension and eye movement indexes.2. For one-, two- and three-column texts, no significant differences are found on reading comprehension indexes but among such indexes as saccade length, number of within-line and multiple-line regression. Compared with two- and three-column text, one-column text is the best. Moreover, the number of fixation, fixation frequency, fixation duration and total regression numbers of one-column text are also better.

语种和开本在阅读理解指标与眼动指标上的交互效应均不显著。2一栏、二栏、三栏设计材料在阅读理解指标上没有显著差异，但在眼跳距离、行内与行间回视次数上有显著差异，表现为一栏最优，且一栏设计材料的注视次数、注视频率、注视点持续时间和总回视次数等眼动指标都优于二栏、三栏材料。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。