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In this article, the author introduces features of urban large-span bridge s, and discusses some problems of urban large-span bridge s, for example, structure selection, position selection, cross section layout, structural safety reservation, construction monitoring, subsidiary facilities, bridge aesthetics and selection of relevant standards and so on.

论述了城市大跨径桥梁的特点，就城市大跨径桥梁设计中的结构选型、桥址的选择、宽桥横断面布置、结构安全储备和施工监控、附属设施的考虑、桥梁美学和有关规范的选用等问题，进行了较深入的探索，并对我国城市大跨径桥梁的设计和建设提出有关建议。

This paper is carried out to analyze the buffeting of long-span steel arch bridge in operation and erection stage. The research is mainly focused on the following aspects: Based on the present AR method, the AIC rule is used for fix the rank of the AR model to improve the simulation precision. Take into account that the wind speed spectrum is vary with the height for the long-span steel arch bridge, simulate the fluctuating wind field.

主要工作有以下几个方面：通过对现有的AR法进行改进，采用最小AIC(A-Information Criterion)准则准确识别模型阶数，提高AR法的计算精度，并考虑大跨度钢拱桥风速谱随高度变化的特点，实现了对三维空间脉动风场的有效模拟。

To meet the challenge of the design for different span projects, the influence of the major parameters on the mechanical behavior at different spans is analyzed in this paper. The variation rule of these parameters with the span is discussed in this paper, which provides thereunder for project designs.

4为满足实际工程中不同跨度的设计需求，本文针对张弦立体桁架结构的主要参数在不同跨度时对结构的受力性能影响情况进行了计算分析，讨论了结构参数和跨度二者之间的变化规律，为工程设计提供了参数选择的依据。

Aiming at the light track traffic project in Tianjin crossing over the Tianjin-Tanggu Highway , because of the lower space, the difficult crossing condition, and overcoming the long steel rail force caused by no attemperator on the seamless railway, the project adopts a 4-span prestressed concrete continuous rigid-frame bridge with span arrangement (42+62+62+42)m.

针对天津轻轨交通项目跨越津塘公路工点低净空、跨越条件困难，以及为克服桥上不能设置无缝线路温度伸缩调节器所带来的长钢轨作用力问题，研究采用了42m＋62m＋62m＋42m四跨预应力混凝土连续刚构桥。

The company offers large-span arch beamless color plate roof installation and construction, the use of color steel imports Shanghai Baosteel, the largest single-span of up to 36 meters.

本公司提供大跨度无梁拱型彩色钢板屋顶安装及施工，采用上海宝钢进口彩色钢板，最大单跨度可达36米。

The results indicated:1 Some cognitive performances decreased obviously with age,such as symbol-digit, visual digit span, auditory digit span,pairedassociation learning,free recall of picture and recognition of meaningless figure But other cognitive performances did not decrease with age, such as picture classific...

结果表明：（1）一些作业（符号数字、视觉数字广度、听觉数字广度、词对联想学习、图象自由回忆和无意图形再认）成绩随年老明显下降，另一些作业（图象分类、卡片分类、心算和矩阵填图）成绩不随年老明显降低；（2）再次验证心算、符号数字、数字鉴别和计数四项非词语性作业速度随年老进行性减慢。

The sofrware STAAD/PRO that calculate a standard beam with 80 m span and large span cable-stayed bridge is used then the coaction problem is analysed in structure.

这种方法不能考虑桥面系中纵、横梁和主桁架间的共同作用问题。对于大跨度桥梁来说，在运

Results: Tyroserleutide can significantly increase the life span of H22 tumor-bearing mice by 50-70% in dosages of 20ug/kg/d-80ug/kg/d,specially the high dosage of 80ug/ml can significantly increase the life span by 69.24%; Tyroserleutide can inhibit the growth of transplanted hepatocellular tumor BEL-7402 in nude mice,the rate of tumor inhibition was25-50% in dosages of 40-320ug/ml ,the inhibition rate of 160ng/ml was 44.03%; Tyroserleutide could inhibit the growth of H22 and BEL-7402 tumor in a dose-dependent manner. Simultaneously, tumoricidal activity of tyroserleutide against BEL-7402 cell line in vitro was observed hinger when compared with the control group(P.05).The inhibition effect of 72hrs was higher than 24hrs,48hrs,96hrs.And specially the high dosage of 160ug/ml can significantly inhibit growth of tumor cell by 19.36%. Tyroserleutide can activated PEM and marked enhance cytotoxicity andphagocytosis functions in vitro and in vivo. The OD values of cytotoxicity were observed hinger when compared with the control group(P.05).The cytotoxicity of macrophages activated by tyroserleutide against BEL-7402 and B16-F10 was 35.58%,61.2% in vitro and21.39%,47.63% in vivo. The cytotoxicity rate of nude mice PEM was 32.86%,73.07% in vivo. Furthermore, tyroserleutide alone could stimulated the production of IL-1B TNF- a and NO by M . Tyroserleutide and LPS could synergistically activated M producing more cytotoxicity effectors. Conclusion: Tyroserleutide had inhibition functions against hepatoma carcinoma .Its possible mechanisms were related to the affect that Tyroserleutide could inhibit tumor cell directively and induce tumor cells apoptosis or death effectively.

结果：酪丝亮肽能显著延长腹水型肝癌H_(22)小鼠的生存时间，给药剂量为80μg／kg／d时疗效最显著，达到69.24％，在20μg／kg／d-80μg／kg／d剂量范围内生命延长率为50-70％，给药剂量与荷瘤鼠生存时间呈现一定量效关系；酪丝亮肽能显著抑制人肝癌BEL-7402移植瘤裸鼠的肿瘤生长，给药剂量为160μg／kg／d时疗效最显著，抑制率为44.03％，并且在40-320μg／kg／d剂量范围内抑制率为25-50％，给药剂量与肿瘤抑制率呈现一定量效关系；酪丝亮肽体外对人肝癌BEL-7402细胞生长有一定的抑制作用，在作用72hrs时各浓度酪丝亮肽对肿瘤细胞的抑制作用较24hrs、48hrs、96hrs明显，其中浓度为100μg／ml时抑制率达19.36％；酪丝亮肽体内外均能增强小鼠腹腔巨噬细胞对肿瘤细胞的杀伤：体外作用中巨噬细胞对BEL-7402、B16-F10的杀伤功能明显增强，与效应细胞对照组相比有显著性差异(P＜0.05)杀伤率分别达到35.58％、61.2％；体内作用中巨噬细胞对BEL-7402、B16-F10的杀伤功能明显增强，与生理盐水对照组相比有显著性差异(P 。05)，杀伤率分别达到21.39%、47.63%；裸鼠腹腔巨噬细胞经酪丝亮肤作用后对BEL一7402、B 16一F10杀伤功能明显增强，与生理盐水对照组相比有显著性差异(P.05)，最高杀伤率分别达到32.86%、73.07%；酪丝亮肤能增强单核巨噬细胞系统的吞噬功能，吞噬指数与生理盐水组比较有显著性差异(P.05)；酪丝亮肤体外作用能促进小鼠腹腔巨噬细胞分泌合成细胞毒效应分子IL一lp、TNF一Q和NO，与效应细胞对照组相比有显著性差异(P.05)；酪丝亮肤体内作用能促进小鼠腹腔巨噬细胞分泌合成细胞毒效应分子IL一lp、TNF一Q和NO，与生理盐水对照组相比有显著性差异(P.05)；酪丝亮肤能促进鼠巨噬细胞株R戌W264.7分泌合成IL一1p和NO，IL一1日、NO水平分别在酪丝亮肤作用24hrs、12hrs时达到高峰，酪丝亮肤单独应用能提高巨噬细胞的分泌合成功能，而且酪丝亮肤能与LPS协同作用刺激巨噬细胞的细胞毒效应分子分泌合成。

O the CR and PR patients displayed significant long six months life span in impositive TSGF patients, but the one year life span had non difference.

SGF、CA125、Ft、CEA四项指标联合检测的灵敏度和特异性高于单项指标和三项联合。

The sub-problem optimal way is used to optimize the mutual insert multi-span greenhouse and the optimal result is disposed using iterated algorithm. Through repetitious iterative disposing the optimal result of three kinds of loads to the mutual insert multi-span greenhouse, it is acquired that the arch pipe's diameter is 32mm, the knighthead's diameter 20mm, the mutual distance 60cm and the gradient side pole's horizontal projection distance is 50cm.

采用零阶优化方法对互插式塑料温室的优化计算结果进行多次迭代处理，得到3种工况下的优化结果：拱杆直径为32mm；支撑杆直径为20mm；互插间距为60cm；倾斜侧杆的水平投影为50cm。

This is not an ordinary box, which is used as a background picture of the dialog box, very pretty.

详细说明：这可不是一个一般的对话框，它是用图片作为背景的对话框，非常好看。

Conceal me what I am,and be my aid for such disguise as haply shall become the form of my intent.

遮掩我的身份，帮助我，我的面具将成为我的目的。