查询词典 typical of
- 与 typical of 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
By measuring missile movement inertia with torsion pendulum, the influences of periodic measurement error, systemic damp, period of swing object and corporative period of t he measured object and swinging object were analyzed. The relation among measurement error of movement inertia, measureme nt period, the period of swing object,corporaˉ tive period of tested object and swing object was proved. The maxi mal ratio between movement inertia for swinging obˉ ject and the measured object under conditions of different errors w as given under typical measurement precision.
通过扭摆测量导弹转动惯量的方法,分析了周期测量误差、系统阻尼、摆动体周期以及被测件和摆动体共摆周期对转动惯量测量精度的影响,得出转动惯量测量误差和周期测量误差、摆动体摆动周期、被测件和摆动体共摆周期之间的关系,给出了在典型的测量精度要求,不同的周期测量误差情况下,摆动体转动惯量和被测件转动惯量之间的最大比值。
-
Floor of entire county total ground accumulates 4885 square kilometer, climate characteristic is spring dry sand blown by wind is much, the summer is short rainfall is little, year average air temperature 2.5 ℃, fall 350mm is controlled, frost-free period is controlled 110 days, it is typical dry farming county, long-term since, because the ploughshare type of follow tradition plows cultivation, a large number of the earth's surface are completely bare, monsoon comes, soil land of medium fine sanded face is reached organic blow character, cause edaphic sand to change, fertility drops, raise of sand and dust, year answer a year, change dene serious with each passing day, cause aggravation of zoology environment year after year, the agriculture that also decided place produces a condition, groundwater source is not worth badly, 10 years of 9 drought, extensive cultivation, crop yield is low and flabby.
全县总土地面积4885平方公里,气候特色为春季干燥风沙多,夏季短促降雨少,年平均气温2.5℃,降水量350mm左右,无霜期110天左右,是典型的旱作农业县,长期以来,由于沿袭传统的铧式犁耕作,大量地表完全裸露,季风来临,将土壤中的细沙面土及有机质刮走,造成土壤沙化、肥力下降,沙尘扬起,年复一年,沙化日趋严重,造成生态环境逐年恶化,也决定了当地的农业生产条件,地下水源严重不足,十年九旱,广种薄收,作物产量低而不稳。
-
Some statistical properties of product assembly are obtained on the basis of industrial investigation of assembly procedure and analysis of assembly operations of typical products; concept of fuzzy quotient set is introduced to the study of assembly sequence planning and a theoretical frame and algorithm for assembly sequence planning based on product fuzzy quotient set is presented; theory and method of fuzzy automata and fuzzy decision are used in the investigation of sensor based assembly sequence planning and a theoretical frame and algorithm for assembly sequence planning based on information sensing of assembly process are presented; an assembly model for product is put forward; study of product disassemblability is carried on.
论文通过对产品装配工艺的工厂调研及典型产品的装配作业分析得到了有关产品装配的一些统计特征;将模糊商集合的概念引入装配顺序规划的研究中,提出了基于产品模糊商集合的装配顺序规划的理论框架和算法;将模糊自动机及模糊决策的理论和方法应用到基于感知的装配顺序规划的研究中,提出了基于装配过程信息感知的装配顺序规划的理论框架和算法;提出了一种产品装配模型;进行了产品可拆卸性的研究。
-
This text proceed with the theory of the vibration, utilize typical elastic hinge law analyze structure dynamics characteristic when the blade is quivered to instability, and then use relevant knowledge of blade vibration to simplify the model and the aerodynamic force of the vibration. Through the simplification, we can get the equation of the blade, which is dispersed to its instability. Then VISUAL BASIC procedure is utilized to work out thecharacteristic value of vibration and the vibration frequency. At last comparing the result which is calculated by the above-mentioned theory formulae with the result which is calculated by internationally agreed procedure ANSYS to verify the accuracy of the formula of reduction.
本文从振动理论入手,利用最为典型的弹性铰链法分析叶片发生颤振失稳时的结构动力学特性,然后对振动模型及振动时所受的气动力进行简化,利用简化方程得到叶片发生发散失稳时的振动方程,利用编制的VISUAL BASIC程序解出振动的特征值并得到振动频率,最后分别通过上述的理论公式和国际通用的有限元程序ANSYS对风力机叶片模型进行发散失稳时的频率计算,验证简化公式的准确性。
-
A test model of four co-rotating disks was developed as the simplified version of a typical internal cooling system of a gas turbine compressor. The investigation was on the distribution of local heat transfer coefficient and the averaged nusselt number of the downstream main disk. Experimental analysis may lead to following conclusions: the distribution is not of monotony and multi-peaks were found along the disk surface,Nu increases with the decrease of the rotational reynold number Re(subscript w,Nu increases with the axial reynold number and the grasholf number.
针对航空发动机多级压气机盘腔的冷却问题,对具有轴向通流的三腔模型进行了系统的研究,通过对局部换热特性与平均换热特性的分析,可以表征旋转盘的热应力水平和相对冷却效果,结果表明表征旋转盘热应力水平的局部换热特性在旋转盘的半径上呈多峰分布,表征相对冷却效果的平均换热特性与旋转雷诺数Re、进气雷诺数Re以及格拉晓夫数Gr有关,当Re及Gr增加时,平均努塞尔数Nu随之增加,而Re的增加使之减小。
-
This thesis is divided into four parts, first part one has explained the background of the research, puts forward to the problem of the thesis, thinking and method; The second part two has introduced the overview of northwest under developed area, and analyzed the characteristic of local university"s scientific research of northwest under developed area and the demand of young teachers; The third part, according to the current situation motivation of scientific research the young teachers of local university in Gansu as the individual case, carrying on comparative analysis to local university"s young teacher"s scientific research in Gansu Province; The forth part has combined the typical case - the current situation of Gansu Province, put forward the measures to the northwest under developed area that concerning the scientific research motivation for young teachers: Intensity of research funding of the young teachers should be moderate; Young teacher"s assessment of results should not give priority to symbolic achievements and patent for invention; the structure of graduation school the young teacher of local university should be optimized; It is necessary to strengthen the training of the scientific research of the young teachers;It is necessary to set up the teachers sabbatical leave system and improve the system of floating of teachers of local universities.
因此,本研究选择了甘肃地方高校青年教师的科研激励问题作为论文的个案,力图对西北欠发达地区地方高校青年教师的科研激励问题提出对策性建议。本研究共分为四部分,第一部分阐述了研究背景,梳理了相关的文献资料,提出研究的问题,思路和方法;第二部分首先介绍了西北欠发达地区概况,并对西北欠发达地区地方高校科研的特点及青年教师的需求特征进行了分析;第三部分由于甘肃地方高校青年教师科研激励现状在西北欠发达地区地方高校中具有典型性和代表性,以甘肃省地方高校青年教师科研激励现状为个案,对甘肃省地方高校青年教师科研激励措施进行了比较分析;第四部分结合个案——甘肃省地方高校青年教师科研激励的现状,提出西北欠发达地区地方高校青年教师科研激励问题的对策性思考:科研资助强度应适中;成果鉴定不宜以标志性成果和发明专利为主;优化地方高校青年教师学缘结构;加强地方高校青年教师的科研培训;建立学术假制度以及完善地方高校人才流动制度。
-
The main content of the dissertation is designing and realizing the total scheme and frame of system software. The module of the input and output is designed by using the generally I/O of the multichannel buffered serial port to simulated the communication of I~2C bus. The Ping-Pong buffer is brought forward to resolve the problem of the data rate matching. The logic switch function is designed in the programmed logic devices. The data transmission rate is improved by using the DMA and the dual buffer mechanism. The system program self-loading is realized by the design of the self-leading program. Lastly, the dissertation analyzes the characteristic of LLL video and experimentalize with some typical image processing algorithm.
主要对系统软件的总体方案与框架结构进行设计实现,内容包括利用通用串行口模拟I~2C通讯实现输入/输出模块的设计,提出乒乓缓冲结构来解决数据的速度匹配问题,利用可编程逻辑器设计完成逻辑切换控制功能,利用DMA并行传输方式并设计双缓冲结构提高数据的传输速度,设计自引导程序来实现系统程序自加载,最后深入探讨了微光视频图像的特征说明了几种典型的微光图像处理算法的原理,参考这些处理算法设计能在高速视频图像处理器上实现的软件方法,并做了一部分相关的实验研究。
-
The results show that the major contribution to DOS of Mg and Pb are the 2p orbit of Mg and the 5d orbit of Pb, followed by the 3s orbit of Mg and the 6p orbit of Pb, the 6s orbit of Pb is the smallest one. There are a large number of charges around Mg, it has the characteristics of typical metal bond. Mg and Pb share some charges to form covalent bond, but the distortion of the charge at the junction is little; the proportion of covalent bond is less than the metal bond, Mg2Pb is semimetal. The elastic modulus and shear modulus of Mg2Pb are 68.6 and 27.9 GPa, respectively. Based on Pugh empirical criterions and Poisson's ratio, Mg2Pb is brittle in nature.
结果表明:Mg和Pb对态密度的贡献主要是Mg的2p轨道和Pb的5d轨道,其次为Mg的3s轨道和Pb的6p轨道,Pb的6s轨道贡献最小;在Mg原子周围有大量的电荷存在,呈典型的金属键特征,Mg、Pb之间存在共用的电荷,有较强的离域性,以共价键形式存在,但交界电荷的畸变不大,故共价键所占比例较少,金属键所占比例较大,Mg2Pb化合物呈半金属性;Mg2Pb的弹性模量和切变模量分别为68.6和27.9 GPa,Pugh经验判据和泊松比均表明Mg2Pb具有脆性。
-
A typical case is the right of setoff of commercial bank. By analyzing the theoretical basis of the right of setoff and the relationship between bank and customers, the author discusses the problems of bank s right of setoff and the system of setoff of our commercial banks after reconstruction. Th...
本文通过对抵销权基础理论和银客关系的分析,详细论述了银行抵销权存在的问题及重构后的我国商业银行抵销权制度,力求在有效保障银行债权实现的同时更好地保护客户的合法权益。
-
Of the five stages deformation, the exact ages of the (2) and (3) were determined by 40Ar/39Ar method as 290 and 259 Ma respectively.2. New results on the metamorphic belts and associated metamorphism of the Xiaopu metamorphic rocksBased on detailed microtextural observations and occurrence of typical metamorphic minerals, five metamorphic belts in the Xiaopu metamorphic rocks are identified. From the north to the south, they are biotite belt, garnet belt, staurolite belt, andalusite belt, and sillimanite belt. I suggested that the metamorphic belts occurred in the Xiaopu area belongs to the high temperature/low pressure series, may have resulted from the later Permian crust extension at ca. 290 Ma.3. I suggest that there may have been a Carboniferous backarc basin along the southern slope of the Harlik Mountain.Detrital Zircon SHRIMP U-Pb dating indicated that the sedimentary age of the Julideneng formation lithic sandstone must be later than late Devonian, most likely is Carboniferous rather than previously thought Precambrian. Analyses on its geologic setting, location of provenance, and sedimentary environment suggest the Carboniferous strata may form in a lagged backarc basin bounded by backarc uplifts.5. Reconstruction of the post-Paleozoic tectonic evolution history of the Harlik MountainThe tectonic evolution of Harlik mountains since the Paleozoic were reconstructed as followings:(1) arc-affinity magmative activities occurred during the middle-Ordovician to early-Silurian;(2) the middle-Silurian to late-Devonian was a back-arc uplift stage;(3) back-arc extension featured the Carboniferous period;(4) post-collisional extension and/then compression during Permian;(5) at the Mesozoic, differential uplift developed; and (6) the late Cenozoic is the intra-continental re-orogen stage.6. Primary estimation of the crust shortening is madeThe folded pre-Mesozoic strata were used to estimate crust shortening along the Harliknanshankou-Koumenzi, Shichengzi-Baishitou, and Qincheng-Xiaopu sections. Their shortening ratios are 16.2%, 19.8%, and 20.1% respectively corresponding crust shortening are 4.3, 9, and 11.3 km.
根据Ar-Ar热年代学研究,精确测定了早二叠世伸展变形和晚二叠世挤压变形的峰期时代分别为290Ma和259Ma.2、提出了关于哈尔里克山南麓小铺一带变质带和变质作用的新认识根据显微观察资料和特征变质矿物的出现,把小铺一带的变质岩由SW向NE方向依次划分为黑云母带、石榴石带、十字石带、红柱石带和矽线石带等变质带;初步确定该区的变质作用属于中温-低压型,变质作用发生的时代为290Ma左右,是该区早二叠世地壳伸展的产物。3、首次提出哈尔里克山南麓在石炭纪可能发育弧后盆地的新观点根据哈尔里克山南麓原"居里得能组"岩屑砂岩的碎屑锆石SHRIMP U-Pb定年,确认这套地层的沉积不早于晚泥盆世,很可能是石炭纪,而不是前人所说的前寒武纪;结合对其区域地质背景、源区位置和沉积环境分析,推测该区石炭纪可能为滞后弧后盆地和弧后隆起区构造背景。4、进一步证明哈尔里克山不发育与岛弧演化相关的泥盆纪岩浆活动根据对代表性闪长岩和花岗岩的锆石SHRIMP年代学研究获得的新资料,结合该区已有相关资料的综合研究,确定哈尔里克山岩浆岩分别形成于奥陶纪-志留纪和石炭纪晚期-二叠纪,不存在泥盆纪的岩浆岩,进而认为该区泥盆纪不属于岛弧环境。5、重建了哈尔里克山古生代以来的地质演化过程根据区域资料以及本次研究所获得的资料,把哈尔里克山古生代以来的构造演化划分中奥陶世-早志留世为岛弧、中志留世-晚泥盆世为弧后区、石炭纪弧后伸展、二叠纪为后碰撞伸展与挤压、中生代差异隆升和晚新生代陆内再造山过程等构造阶段。6、初步估算了哈尔里克山地壳缩短率和缩短量根据前中生代地层褶皱估算的哈尔里克山南山口-口门子、石城子-白石头和沁城-小铺三条剖面的地壳缩短率分别为16.2%、19.8%和20.1%,相应的地壳缩短量分别为4.3km、9km和11.3km。
- 推荐网络例句
-
It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
-
The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐
-
The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。