查询词典 U.

Results: Nitrendipine could relax concentration-dependently the arterial rings of the rat U-Ⅱ precontracted arteries -log

结果：尼群地平可浓度依赖性舒张大鼠U-Ⅱ预收缩的肺主动脉环［-log(EC50)=5.86±0.30， Emax=(73.73±15.40)%，以30nmol/L U-Ⅱ的收缩幅度为100%］。

A U-shaped metal loop with pointed ends, driven into a surface to hold a bolt, hook, or hasp or to hold wiring in place.

U形钉：有一尖端的U形金属环，压进表面以固定门闩、钩子或搭扣，或将线固定

The methods of plane arrangement and checking of bowl-button steel scaffold were demonstrated in detail based on the engineering construction of cast-in-place Continuous beam in Houyan Cross-bridge of Shenda Highway. In addition, the methods of communicating the length of U-tray and adjusting the gradient have been given. It is pointed out that original pod can adjust the greater longitudinal or tranverse grade in the box-girder construction and welding-steel-bar can reduce partial compression.

通过后盐立交桥连续箱梁施工这一工程实例，详细论述了碗扣式钢管脚支架的平面布置方法及受力验算方法，提出了碗扣式钢管脚支架的U托旋出长度的计算方法及纵横坡的调整方法，并指出采用找零立杆的方法可以解决较大纵横坡度箱梁的施工问题；采用贴焊钢筋的方法可以解决U托偏心受压的间题。

Interlayer oxidized zone can be divided accurately by Fe_2O_3, Fe_2O_3/FeO and U parameters. We can correct the field macroscopic color zoning by combining the macroscopic zoning and microscopic zoning. Univalent major elements components(Al_2O_3, SiO_2, K_2O, Na_2O) show remarkable activity at the process of interlayer oxidizing, their contents are variable and mingled in different zones and it can't be used in zoning. But we can speculate the developmental degree of interlayer oxidized zone and uranium mineralization according to the concentration trends and variation characteristics of sensitivity group, activity group and their ratios .(3)The comparatively steady elements such as lithiphile elements, sulfophile elements and high field strength elements change regularly at the process of interlayer oxidation except some radioactive elements. Trace elements and rare earth elements commonly enrich in thin rock clast such as mudstone, in which the enriched elements species are more than those in the whole rock, which indicate that the regeneration action in caulking matter are more deep than that in whole rock at the process of interlayer oxidation, and the reallocate intention of trace elements in main minerlized rock in Tuha basin are more intensive than that in Yili basin at the process of deposition ,diagenesis and later changes .

根据化学蚀变参数PC值和分离迁移位等将常量元素组分分为敏感组分组、活动组分组、次活动组分组和惰性组分组，不同组分可分别用于讨论层间氧化带低温地球化学中不同问题；敏感组分(变价元素组分Fe_2O_3、FeO)和U在层间氧化带中迁移富集规律明显，Fe_2O_3／FeOFe~(3+／Fe~(2+)比值具分带判别能力，配合U含量对层间氧化带进行较准确的分带，可克服野外宏观颜色分带偏差：提出Fe~(3+)／Fe~(2+)分带判别值在不同盆地、不同地段不同，除受氧化作用控制外，流体酸碱度不同也是重要因素的观点，对找矿实践有实际指导意义；活动组分(Al_2O_3、SiO_2、K_2O、Na_2O)在层间氧化作用过程中具有较明显的活动性，其含量值变化跳跃，在不同分带相互交织，不具分带指示意义；但利用敏感组分、活动组分及其比值在层间氧化带中的变化特征可推测层间氧化带发育的完善程度及其含矿性；次活动组分组(CaO、MgO、MnO_2)含量低，变化规律性差；惰性组分组(TiO_2、P_2O_5)含量低，活动稳定，可用来反映沉积物源特征。

There are three parts included. The first part is the prepositive-amplifier, it gets broadband high gain and flat frequency response. The second part is the U band quadrupler, which composed of two doublers using a PHEMT chip HMMC-5040, a Schottky diode of DMK-2790, a HMMC-5040 amplifier, and a fin-line transitional stage. Maximum output power higher than 60mW is obtained in V band. The third part is a 2nd harmonic gunn oscillator injection locked by the Fundamental Wave,which get about 2GHz locked bandwidth in W band.

电路主要由三部分组成，第一部分为采用HMMC-5618设计的前置放大器，实现了宽带高增益和平坦的频率响应；第二部分为设计的主体，由HMMC-5040设计的二倍频器、DMK-2790设计的二倍频器、HMMC-5040设计的放大器及鳍线过渡段组成的U波段四倍频器，在U波段实现了最高60mW以上的输出功率；第三部分为基波注入锁定谐波Gunn振荡器，在W波段实现了近2GHz锁定带宽。

The direct evaporative internal-melt ice storage air conditioning is a new and promising technology.It is important to master the ice coil heat transfer performance for the project.The paper analysed the dynamic characteristics and established the corresponding mathematical models of the system,and used the model to analyse the performance of caving cooling process changes.The model for direct evaporation in the U-shaped ice-melting ice storage VRV system couldbe helpful to design and optimization theory.

直接蒸发内融式冰盘管是空调蓄冷工程中常用的一种方式，对这种冰盘管的融冰传热性能的掌握对于工程应用非常重要，本文对基于VRV空调系统的内融式U形冰盘管融冰过程的动态特性进行了分析，建立了相应的数理模型，并利用该模型分析了放冷过程的性能变化，该模型可为直接蒸发内融式U形冰蓄冷VRV融冰系统的设计及优化提供理论依据。

For external nodes, that is nodes that have been visited less than the threshold defined in Section 2, u and d^2 are computed as u=, and

对于外部节点，即节点已经访问过低于在第2条中定义的门槛，u和d^2计算，为

Let〓,(5)then diam 〓;then we call this 〓be the"cross section"of u.

若记〓（5）则〓。若〓，则称此〓为：凸单调函数u的以为顶点的〓截影，或简称为u的截影。

There are many problems in the carling forming and unloading processes such as expand and shrink of U section wall, the torsion of U section and the warp of carling head.

针对纵梁冲压成形及卸载后发生的U型截面侧壁的外扩、内缩、扭转以及纵向端头翘曲等问题，首先分析了纵梁的成形及回弹变形机理，利用仿真分析软件KMAS进行了数值模拟并采用半解析、半实验方法研究了纵梁底面翘曲，找出模具结构的最佳方案。

The interface shearing force's differential equations were established based on various principle, in which the energy of strain for concrete flange plate and cold formed steel U section beam and shear connector are calculated.

分别计算混凝土板、剪力连接件、U型钢的应变能，利用变分原理建立冷弯U型钢与混凝土组合梁的界面剪力微分方程。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。