查询词典 a block of

A series of tri-block copolymers of styrene/tetradecyl methyl acrylate/3-methacryloxyl-propyl thimethoxyl silane was synthesized by atom transfer radical polymerization. The structures of those copolymers were characterized by means of gel permeation chromatography, infrared spectrum, and nuclear magnetic resonance (1H-NMR). Effect of tri-block copolymers on the mechanical properties of glass fiber/polypropylene composites was also investigated.

采用原子转移自由基聚合法合成了一系列新的三嵌段共聚物大分子偶联剂聚苯乙烯－b-聚甲基丙烯酸十四酯－b-聚3-甲基丙烯酰氧基丙基三甲氧基硅烷，通过凝胶渗透色谱、红外光谱和核磁共振(1H-NMR)证实了其结构，并研究了其对玻璃纤维／聚丙烯复合材料力学性能的影响。

this paper analyses the basic principle of tpc,compares the error performance in the system which has been applied with tpc with the uncoded system,studies the influences which different block codes and iterative numbers to tpc decode performance.under the circumstances of different iteration numbers and block codes,experiment simulation is carried on.the simulation results indicate that introduction of tpc can get the code gain of 5~6 db.tpc decoding algorithm is simple,and doesn′t have the error floor,the complexity of its hardware implementation is smaller,it is a kind of practical channel coding method.

摘 要：在分析turbo 乘积码的基本编译码原理的基础上，比较了未编码与编码后系统的差错性能，研究了选取不同分量码、不同迭代次数对tpc译码性能的影响。在不同迭代次数与分量码情况下，进行了仿真实验。仿真实验表明，在相同的差错性能条件下，采用tpc码能带来5~6 db的编码增益。tpc译码算法简单，没有错误平层，硬件实现复杂度较小，是一种非常实用的信道编码方式。

The wide windows look out on Harlem's invincible and indescribable squalor:the Park Avenue railroad tracks, around which, about forty years ago, the present dark community began; the unrehabilitated houses, bowed down, it would seem, under the great weight of frustration and bitterness they contain; the dark, the ominous schoolhouses from which the child may emerge maimed, blinded, hooked, or enraged for life; and the churches, block upon block of churches, niched in the walls like cannon in the walls of a fortress.

宽大的窗户俯瞰着哈莱姆的破败，它一成不变，难以描述：那里有帕克大街的车轨，在此周围，大约40年前，现今黑暗的社区就开始形成了；那里有无法修复的房子，耷拉着，似乎在承载着其中失败与痛苦的巨大压力；那里有黑暗的、带来坏运气的学校教室，因为从这些校舍里出来的孩子可能是伤残的、瞎眼的、吸毒的或一生愤怒的人；那里还有很多教堂，街区连着街区，教堂的墙壁都装饰着神像，就像加农炮加在堡垒的堞垛上。

Block: block of data, which is a subset of the piece specified by index.

piece消息是一个变长的消息，X是的长度。

The results are shown as below.1 Tectono-thermal evolution: The history of the Songliao basin is divides into four stages, high-temperature doming and extension, high-temperature rifting, low-temperature depression, and low-temperature shrinkage. Numerical simulation of mechanical process shows that the basin appeared in the early- to late- Jurassic as a result of rapid low-angle subduction of the Pacific plate towards the northwest, of movement of the Siberian block towards the southeast, of many other influences such as internal thermal stress in the mantle, gravitational force, stress of phase transition, etc. Both the Pacific plate and the Siberian block slowed down in the early Cretaceous, and almost stopped in the middle Cretaceous with the rapid decrease of abnormal heat in the mantle below.

盆地构造热演化力源机制数值模拟研究表明：早、中侏罗世至晚侏罗世晚期，盆地演化主要是太平洋块体向北西方向以低角度快速俯冲和西伯利亚块体向东南俯冲共同作用的结果，同时也与地幔内部热力、重力、相变力以及地球自转及公转速度变化效应和上覆块体绝对运动的作用有关；早白垩世早期至早白垩世中期，来自东部太平洋块体俯冲作用的减弱，而这一时期影响盆地演化的主要力源是地幔内部热力、重力、相变力以及地球自转及公转速度变化效应和来自西伯利亚块体俯冲作用；进入早白垩世晚期至晚白垩世早期，由于双重俯冲带中西侧俯冲作用带基本停止活动，而本区地幔热能的快速衰减则控制盆地的构造热演化；晚白垩世晚期以后，太平洋块体活动加强和地幔热运动是影响盆地演化的主要动力。

In the fourth paragraph, how the theory of the damping to forging hammer foundation advances at home and abroad, the research and application of the implement for damping to forging hammer, the structure of damping to forging hammer and the calculation methods for forging hammer foundation vibration system, which are used at home nowadays, are particularly introduced.In the fifth paragraph, aiming at direct damping under anvil block of forging hammer, the author bases a mechanics model of two-degree with damping, and optimizes the vibration parameters both in frequency field and in time field, then finds out the new simple method of optimizing the vibration parameters of the damping device under anvil block of forging hammer.

第五章针对锻锤砧下直接支承式减振基础，建立了锻锤减振系统的二自由度有阻尼振动力学模型，然后用傅立叶变换法求出振动传递率的频率关系，用直接积分法求出砧座和基础位移的时域响应，并分别对频域函数和时域函数进行参数优化，最终建立起频率函数—时域函数—优化参数间的相互关系，从而找到了锻锤砧下隔振器参数优化的简便新方法。

You may also notice that you do not always proceed from one block of words to the next: sometimes you may move back to a preceding block of words if you are unsure about something.

你也可能注意你不总是从一范围的字着手进行到下一个：如果你有关某事是不肯定的，有时你可能移动回到一个前述范围的字。

Subsidiary, a total of four business segments: one is just listed kyoko resources, mainly the production of Glauber's salt-based; another one is based on the Proton in the heavy industry in Sichuan Xinjin mainly involved in special vehicles, bridge components, building machinery, new energy, petrochemical equipment industry, Hyundai Heavy Industries Company; third block is based on the production of new materials of special polymer-based PPS, in Shuangliu, Deyang has 31,000 tons production base, this piece of or will be available in September of this year; fourth block, then is the main oil-producing machinery and equipment company, is currently settled in places are being selected, which may be settled in Nanchong in Sichuan.

而腾中重工的母公司四川华通投资控股有限公司的实际掌门人就是李炎。在李炎控制的四川华通投资控股有限公司旗下，共有四大业务板块：一块是刚刚上市的旭光资源，主要以生产芒硝为主；另外一块是以四川新津的腾中重工为主，涉足特种车辆、道桥构件、建筑机械、新能源、石化设备产业的现代重工企业；第三块则是以生产PPS高分子特种新材料为主，在双流、德阳拥有3.1万吨产量的基地，这块或将于今年9月份上市；第四块，则是以生产石油机械设备为主的公司，目前落户地正在选择当中，可能会落户于四川南充。

Therefore, according to the book block of munltivariable, conservition luster, a discretion to adjust and to master the amount of adhesive coating is to improve the book block the bond.

所以，根据书芯的厚薄、纸质的光泽性等特点，酌情合理调整和掌握底胶涂布量，是提高书芯粘结牢度的重要一环。

Pacific plate subduction was dominated in study area since late Jurassic, stress regime was then transited from compression into extension associated with the steepening of subduction angel and retreat of subduction zone ocean inward; due to the difference in basement properties, extensional rifting basins dominated by depression basins developed within the Yangtze block, while volcanic faulting bounded basins for the Cathaysia block, and a series of red faulting bounded basins with half graben shape for the areas within the boundary zone between these two blocks.

晚侏罗世以后，太平洋板块对研究区的影响占主导地位，随着俯冲角度的变陡和俯冲带向洋的后撤，全区由挤压为主转变为以拉张为主的应力环境，由于基底属性有所差异，在扬子地块区域形成以拗陷盆地为主的伸展裂陷盆地，在华夏地块区域形成了火山断陷盆地，而在两大地块边界附近，则形成了一系列半地堑式的红色断陷盆地。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。