查询词典 U-boat

Laser ablation inductively coupled plasma mass spectrometry was used to establish radiometric U-Th-Pb ages and produce the records of rare earth elements of conodont of the Permian Maokou Formation in the Three Gorges area.

利用激光剥蚀电感耦合等离子质谱对三峡地区二叠系茅口组牙形石的U-Th-Pb同位素年龄进行测定。

If the continuity equation is multiplied by u and added to (2.5), there results F=xyz.

如果此连续方程乘以u并与（2.5）式相加，则有F=xyz。

An analysis of the modernization process from 1990 to 2003 reveals a continuous "U" curve and there is a clear connection between "the economic target","the ecological index" and "the regional difference index".

通过对1990-2003年云南省全面小康进程的分析发现，云南省的全面小康进程呈现出连续"U"型变化，"经济指标"与"生态环境指标"和"区域差异指标"有显著的相关关系。

On the basis of the conclusion above, the nonlinear weak controllable vectors can be obtained, which compose the second class of weak controllable matrix, by means of matrix transfermations of the first class of weak controllable matrix. Furthmore the second criterion of weak controllability, accessibility and strong accessibility, which is more standard, more succinct and more practical, is obtained. On the basis of the first criterion and the second criterion, several important problems about nonlinear controllability are discussed, which include 1 local controllability; 2 three classes of local controllable decomposition, separately by means of local coordinate changes in the neighborhood of a nonsingular point, a point on a singular surface or a designated point x〓 with a designated input u〓; 3 the character of controllability of the ith state variable x〓 in different controllable areas and their boundaries.

在第一判别定理和第二判别定理的基础上，我们分析了非线性系统受控性质中的几个重要问题，所得到的结论包括i得到了非线性系统在可平衡点附近的能控性判别定理；ii分别给出了非线性系统在非奇异点、s阶奇面以及在状态空间内给定的一点x〓和输入u〓上的三种状态分解形式以及相应的求解方法；利用系统的Ⅰ型弱能控矩阵与Ⅱ型弱能控矩阵秩相等的条件，得到了只用系统的前n个弱能控向量来判断系统的弱能控性的判别定理；iii通过引入系统状态分量的三类受控区域边界的定义及相应的求解方法，初步探讨了非线性系统各个状态分量在不同的受控区域及其边界上的受控性质。

Immunohistochemistry and imaging analysis were used for detecting the intensity of expression of u-PA and PAI-1 in renal biopsied tissue of 50 cases with various types of LN and 10 cases with minor glomerular lesions, the results were analyzed correlatively with PCNA cells and type IV collagen.

方法对50例不同类型的LN和10例原发性肾小球轻微病变的肾活检组织，采用免疫组化及图象分析法比较观察了u-PA和PAI-1在肾小球的表达强度，并与肾小球增殖细胞核抗原阳性细胞数和Ⅳ型胶原染色强度作相关分析。

Under the optimized conditions as follows: ratio of apple pomace and cottonseed meal 1︰1, urea content 2.6%, KH2PO4 content 0.09%, glucose content 2%, initial moisture content 62.9%, fermented at 30℃ for 60 h, 5662 and 30000 U/g of xylanase and cellulase were produced, respectively.

在最佳条件（基料棉粕和苹果渣比例为1︰1，第2氮源尿素2.6%，无机盐KH2PO4 0.09%，速效碳源葡萄糖2%，含水率62.9%，30℃培养60 h）下，分别获得了5662、30000 U/g的木聚糖酶和纤维素酶的高酶活发酵干曲。

The principle of work is: When ambient temperature rises, the pressure of the SF6 gas increases, drives the indicator along the clockwise rotation, but at the same time, the mouth of the bimetal compensation system "the U shape" publicizes, then impels the indicator to the counter clockwise rotation, when two kind of strength be equilibrium, the ambient temperature change cannot made the indicator deflection.

工作原理是：当环境温度上升时，虽然容器内SF6气体的密度未发生变化但其压力增大，带动指针顺时方向转动，而当温度上升时，双金属补偿装置的"U形"口张大，则推动指针向逆时针方向转动，当两种运动引起表针的偏转量相抵销时，无论环境温度如何变化，指针都不会发生偏转。

Otherwise, When ambient temperature falls, the pressure of the SF6 gas decreases, drives the indicator counter the clockwise rotation, but at the same time, the mouth of the bimetal compensation system "the U shape" reduces, then impels the indicator to along the clockwise rotation, when two kind of strength be equilibrium, the ambient tempera

反之，当环境温度下降时，虽然容器内SF6 气体的密度未发生变化但其压力减小，带动指针向逆时方向转动，而当温度下降时，双金属补偿装置的"U 形"口缩小，则推动指针向顺时针方向转动，当两种可运动个起表针的偏转量相抵销时，无论环境温度如何变化，指针都不会发生偏转。

With that in mind, pop culture and counterculture maven R.U.

带着这样的想法，流行文化和发主流文化的专家R.U。

In common drill processing of standard countersink,there are some disadvantages such as complicated operation,low productivity,high frequency of tools damage and the product quality can not be guaranteed.This paper gives an analysis on different states of front axle U-bolt fastening face during machining,and then makes a dissection of the ...

本文详细分析了汽车前桥U型螺栓紧固面加工过程中的不同状态，对采用标准结构锪钻加工过程的缺点进行了剖析，介绍了一种与标准锪钻结构不同的新型锪钻结构，其结构简单、使用方便、生产率高，产品精度可有效保证，值得在此类产品加工中推广应用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。