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In this Standard, the setting levels for reliability are raised; the contents of high strength concrete are amended; the Grade III steel bar, high strength steel wire and strand are defined as the main stress-undertaking steel bar; the contents of structural analysis and durability design are added and the measures for concrete crack restriction are amended.

混凝土结构设计规范》提高了可靠度的设置水平，补充了高强混凝土，确定了Ⅲ级钢筋及高强钢丝、钢铰线为主导受力钢筋，增加了结构分析及耐久性设计的内容，补充了限制混凝土裂缝的措施。修订后的《混凝土结构设计规范》对保证工程质量，促进技术进步，实现与国际接轨等方面有了重大进展，达到了国际先进水平。主编：李明顺徐有邻

The main characteristics of problem-based learning are:(1) Learning is student-centered(2) Learning occurs in small student groups(3) Teachers are facilitators or guiders(4) Problems form the organizing focus and stimulus for learning(5) Problems are authentic and ill-structured(6) Problems are a vehicle for the development of real-world problem-solving skills(7) New information is acquired and skills are trained through problem-solving process(8) Evaluation is authentic and performance-based.

同任何一种教学模式一样，基于问题的学习有着独一无二的优点，但本身也存在一定的不足。受中国传统文化的影响，中国的学生大多胆子太小，缺乏主见和创见，解诀问题的能力相对较差，学生的这些学习特点，从一定程度上阻碍了基于问题学习的具体实施。基于此分析，本文提出了一些适当的解决措施。

Based on the processed accessory, the number, the position and the machining data of the holes and the form of the principal axis are determined; The driving way of the headstocks are drawn, the power is transmits by the methods of optimization, the driving parameter are determined, the structure of the principal axis are designed and the strength of the parts, such as the gears and the bears, are checked.

根据被加工零件确定加工孔的数量、位置、切削用量及主轴类型，拟订了主轴箱的传动方式，应用最优化方法传递功率，削减振动，确定传动参数，设计轴的结构，进行如齿轮、轴承等相关零件的强度校核计算。

Emitting a blossoming orange tree flowers, they are different forms: There are dodging the shy, there are very secretly and looked, and there are bold smile, there are still snoring in the name of ...... the old orange tree is such a bit will always have the old stars young at heart urchin.

橘树冒出了朵朵小花，它们形态各异：有害羞的躲着的，有偷偷得张望着的，有大胆的露出笑脸的，有还在打着鼾的……老橘树就是这样一位永远有颗年轻的心的老顽童。

E yes: people with deep set eyes are withdrawn, those with close set eyes are reserved or self-conscious and those with bulging eyes are faithful. Large-eyed people are passionate, while small-eyed ones are secretive reserved.

眼睛： 眼睛深陷的人性格内敛，眼距近的人性格保守且非常自醒，眼睛鼓出的人忠诚，眼睛大的人热情，眼睛小的人深藏不露，不够坦率。

Wild animals are: leopard, wolf, fox, zokor, squirrels, hedgehogs, etc.; birds are sparrows, magpies, pigeons, Yan, quail, birds, dove, pheasant, etc.; fish are carp, catfish, carp, Triplophysa , eel, etc.; amphibians are frogs, toads; reptiles are snakes, lizards, etc.; arthropod, links, software, animals have shrimp, crab, mussel and so on.

野生动物主要有：豹、狼、狐、鼢鼠、松鼠、刺猬等；鸟类有麻雀、喜鹊、鸽、燕、鹌鹑、雕、斑鸠、雉鸡等；鱼类有鲤、鲇、鲫、鳅、鳝等；两栖类有青蛙、蟾蜍；爬行动物有蛇、蜥蜴等；节肢、环节、软体的动物有虾、蟹、河蚌等。

First, the stations'timing process and the slot aligning are discussed. Second, the dissertation propose a resource request random access method based on feedback. The performances of this method are analyzed. Third, proceed from the considerations of the MAC protocol for the HFC system, a QOS-oriental scheduling algorithm for the MAC protocol based on dynamic TDMA is proposed. Simulation results show that the performance of this algorithm is better than that of the first come first service. Forth, two contention resolution algorithms ----p-persistent CRA and tree CRA, which are usually adopted in the HFC system, are summarized. The delay and characteristic are compared. At last, the dissertation introduces the function implementation of the MAC layer based on COM21 UPSTREAMS.

首先，讨论了基站的同步进程和时隙同步的实现；然后，本文提出了一种带反馈模块的资源申请信号随机接入方法，并对其进行性能分析；然后，从HFC系统的MAC协议出发，提出了一种用于基于动态TDMA技术的MAC协议的业务安排算法，计算机仿真结果表明其性能优于先到先服务法的性能；然后概述了常用于HFC系统的两种冲突解决算法——p-坚持冲突解决算法和树型冲突解决算法，比较两者的时延性能与特征；最后，介绍了基于COM21 UPSTREAMS协议的MAC层功能实现，给出了硬件框图和照片。

You have never traveled far and yet All the adjectives are returning from your present time To their origins of nouns You are now not like anything else, but you are a thing itself Black and white, and at most grey with few shades The sharp edges of your shape are rounded It is winter now, and when the exuberant grows thin You are clad in puffiness, exempted from overt movements Reclining into a posture with no rococo clothes, you do not Expect the world in one color to detect The snowmelt streamlets trickling on your body Some life has to be off twice before it is recognized First it dies, and then it is dead, as if it turns away and disappears But now you've come back to it, simply forever

你从未行远过，而所有的形容词都纷纷从你的此刻剥落退回到它们名词的始源你不再像任何其它事物，而是物本身黑白的，至多呈现出层次不多的灰你的形状曾经锐利，如今那些棱角都已圆润冬天稳实，一切茂密也都变瘦唯有你裹得松松泡泡，免除了显见的动作半倚在一个没有螺纹皱的雕像姿态里不再期待同一种颜色的世界能体察你身上暗暗淌过融雪的细流有时生命需要离开两次才被铭记死去，然后消亡，犹如转身与不见而今你和它贴在一起，最简单的永远

Conjugated polymers which are different from traditional semiconductor, have some unique properties. Most of them are quasi-one-dimensional systems with strong electron-phonon interaction. Their carriers are composite particles, which are different from simply electron and hole, characterized with the surrounding distortion of lattice configuration (polaron with spin 1/ 2 , bipolaron with spin 0 etc.). The transport of the carriers and the process that oppositely charged polarons combine to from exciton are believed to be of fundamental importance for electroluminescence properties.

共轭聚合物具有不同于传统半导体的特性，它们是强电-声相互作用的准一维体系，其载流子不再是简单的电子和空穴，而是伴随晶格畸变的具有内部结构的复合粒子(自旋1/2的极化子、自旋为0的双极化子等)，这些载流子的输运、以及正负极化子对复合成激子的过程在很大程度上决定着聚合物的电致发光性质。

Two questionnaires, a pre-examination, two post-examinations and SPSS statistic software were employed, and the following discoveries were made:(1) it is positive to apply training strategies to short-term, intensive, adult learners;(2) linguistic and memory factors are the two biggest obstacles faced by adult learners;(3) most adult learners realize the importance of training strategies, however, the importance of a learning strategy in their mind is greatly influenced by the number of the strategies which are already used in their study process;(4) there are some differences between older and younger learners in their application of strategies; for instance, metacognitive and social/affective strategies are adopted more by the older learners, and younger learners are affected more by cognitive strategies.

研究方法主要有问卷调查和试卷测试，根据受调查者在最终考试中听力测试中取得的成绩，通过SPSS统计软件进行数据分析，判断学习策略对他们听力学习的影响。第一，应用策略培训，对于短期培训的成年学习者，拥有积极意义。第二，语言应用能力和句子识别能力是成年学习者听力学习中的最大障碍。第三，大多数学习者培训前对学习策略对于听力学习的影响有一定的认识，但是认识程度在教学过程中，会受到是策略输入多少的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。