查询词典 U-steel

Secondly, in the trapezoidal channel which profile is that the base width is 20cm, the depth of channel is 20cm, the slope coefficient 1.0, and U-shaped channel which profile is that the depth of channel is 40cm, the radius of bottom circular arc, the external dip angle α of abutment wall is 8°, the article does a series of experiment researches on many of cylinder measuring flumes, such as circular, pier shaped, elliptic and diamond cylinder flumes, and discusses the variance of discharge coefficient, submergence factor, backwater height, head loss and critical submergence degree for each of cylinder measuring flume. On this basis, the article optimizes the structure shape of the cylinder measuring flume further.

然后，在底宽为20cm、渠深为35cm、边坡系数为1.0的梯形断面渠道和渠深为40cm、底部圆弧半径为15cm、边墙外倾角α=8°的U形渠道上，对圆柱形、桥墩形、椭圆柱形和菱柱形等多种柱形量水槽进行一系列的试验研究，探讨各种形式柱形量水槽的流量系数、淹没系数、壅水高度、水头损失、临界淹没度等变化规律，在此基础上，对柱形量水槽的结构形式作进一步优化分析。

Study on emission spectrum of N2 molecule C3Πu state in DC glowing discharge［J］.

直流放电等离子体中氮分子C3Πu态的光谱研究［J］。

Calculating the equivalence class U/C and the discernibility matrices size are the two main factors which affect the efficiency of the attribute reduction algorithm based on discernibility matrices.

影响基于差别矩阵的属性约简算法效率的主要因素有计算U/C等价类和差别矩阵的大小。

CD-ROM, WORM, Erasable Optical Disks are becoming popular because of large capacity and flexibility. U-disk is a new high tech product, which has attracted the world's attention.

光盘驱动器，蠕虫，可擦写的光盘由于其容量大和灵活性变得大受欢迎。U盘是一种新的高科技产品，已经引起了全世界的注意。

Means that the variance in the error term, u, conditional on the explanatory variables, is the same for all combinations of outcomes of explanatory variables.

意思是，不管解释变量出现怎样的组合，误差项u的条件方差都是一样的。

Taking the comprehensive factors into considerations and the experimental curve results, the optimum parameter are the filament voltage U is 3.0 V, the grid voltage U1 is 1.8 V and the reverse voltage U3 is 7.0 V, the first excitation potential of Argon is 11.6 V.

综合各种因素，给出最佳参数组合，并在此组合下给出了测量数据及处理结果，灯丝电压U=3.0V，栅极电压U1=1.8V，反向电压U3=7.0V。在该参数下测得氩原子的第一激发电位U0=11.6V。

After 2 days incubation, harvested exoenzyme RSDA from Bacillus subtilis DB430 with the recombinant plasmid pHR showed the best enzyme activity, around 6.5 U/mL. Crude RSDA is added into 20% ungelatinized Tainon 57 sweet potato powder for hydrolyzation and achieve the highest glucose yield 36 g/L.

Bacillus subtilis DB430 菌株在培养2天后可以达到大约 6.5 U/mL左右的最高酵素活性，经离心将粗酵素液直接加入 20%未经糊化的台农57号甘薯生粉中，最多可以产生36 g/L的葡萄糖。

Under the assumption that the expected rate μS(t , volatilityσS(t are functions of risk asset S, and stock pricing process respectively driven by a general O-U process and an exponential of a Levy process, we obtain the accurate pricing formulas and put-call parity of European option. In the end, assume that riskless rate is given, we deal with pricing formulas of European option on foreign currency and apply the approach to the pricing of the convertible bond.

利用保险精算方法给出了股票价格遵循广义0一U过程模型的欧式期权的精确定价公式和买权与卖权之间的平价关系以及股票价格过程遵循指数Levy过程的定价模型，最后推导出利率确定情形下外汇期权的定价公式，并且给出了保险精算方法在可转换债券定价中的应用。

They reveal two cannonballs, at left, and a wrought iron eyebolt, at right, with a U-shaped structure possibly circling a shank.

他们显示出，左边的是两枚炮弹，右边的是熟铁吊环螺栓，在细长部分好像环绕着一个U形的东西。

A V-shaped recovery would be vigorous, as pent-up demand is unleashed. A U-shaped one would be feebler and flatter.

当压制的产能得到释放，V型复苏的动力是强大的。U型复苏将是虚弱的、平坦的。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。