查询词典 D.D.

Then based on this theory and the concept of local controllability, a series of existence conditions for the asymptotic state observers of 2DGM are proposed. These conditions are analogous to the corresponding well-known results in 1-D case. Finally the related design methods and the 2-D separation property theorem are also presented.

在此基础上，借助于局部能控性概念，建立了一系列十分类似于1-D情形的观测器的存在条件，从这些存在条件出发也可以得到相应的观测器设计算法，最后还得出了2DGM的分离性定理。

If A is D-simple, i. e., A doesn't have any nontrival D-stable ideal, we have the generalized Weyl type simple algebra A .

Der为A上所有F-结合导子组成的李代数。D为Der的任一非零交换李子代数。

Moreover, D-sodium gluconate was mixed with other substances and used as corrosion inhibiting admixtures. The admixture of D-sodium gluconate and sodium tetraborate has the best inhibiting effect among these mixed inhibitors.

复配试验表明，D—葡萄糖酸钠与四硼酸钠组成的复合缓蚀剂缓蚀效果最好，而与甘氨酸和乙醇胺复配的缓蚀剂也表现出较好的缓蚀效果。

Using linear elastic finite element model for piles and pile cap, elastic-plastic finite element model for piles-surrounding soil under pile cap, linear elastic infinite element model for soil around pile group, and mounting interface element on the pile-soil interfaces, 3-D elastic-plastic finite element method is used to analyzing the pile-soil-cap interaction.

对桩及承台采用线弹性有限元模型，对承台下桩周土采用弹塑性有限元模型，对群桩以外的土体采用线弹性无限元模型，在桩土接触面上设置接触面单元，利用三维弹塑性有限元对桩%D土%D承台相互作用进行了分析。

Schubert,Franz:Sonatina in G Minor,D.408-Brahms,Johannes:Violin Sonata No.3 in D Minor,Op.108

舒伯特：G小调小奏鸣曲 D.408/布拉姆斯：第三号小提琴奏鸣曲 Op.108/李察。

Soule gave command of what was designated as "Task Force Dog" to his assistant division commander, Brigadier General Armistead D."Red" Mead, a hard-driving West Pointer who had been G-3 of the Ninth Army in the European Theater in World War II.

索尔将组建的"D特遣队"交给了他的副师长指挥，即阿米斯特·D·"瑞德"米德准将，一名积极进取的西点军校毕业生，他曾经在二战期间的欧洲战场上担任过第9军的作战参谋。

Methods LASEK was performed on 54 eyes of 27 myopia patients. The preoperative mean spherical was -6.00~-14.00 D, average(-8.75 ± 1.27) D.

选取高度近视患者27例（54眼），术前近视等效球镜为-6.00~-14.00D，平均(-8.75±1.27)D。

On investigation of the soft coral Sarcophyton digitatum for the first time anew polyhydroxylated sterol S-D-1 was obtained.

本论文首次对指状肉芝软珊瑚进行了化学研究，从中分离并鉴定了一个新的多羟基甾醇(S-D-1)和鲨肝醇(S-D-2)。

The SiO2-Al2O3-d catalyst was modified with different metal nitrates. It indicates that cadmium nitrate and strontium nitrate could improve the catalytic activity obviously.

用不同种类、不同浓度的金属硝酸盐，对SiO2-Al2O3-d催化剂进行改性研究，发现Cd(NO3)2和Sr(NO3)2改性后，活性和使用寿命较SiO2-Al2O3-d有所提高，而Mg(NO3)2、Ca(NO3)2、Ni(NO3)2改性后的催化剂，活性反而有所降低。

And the results indicate that the principal stress directions in study area are mainly NE-SW, and the second substage tectonic twist made the direction deflect from North to East, but the primary direction changed little; tectonic activities during the O〓～S～D stage is some violent, most of the area are under high stresses status, and rock fracture degree is correspondingly higher, as coinciding with the drill cores observation, i.

通过数值分析，模拟了塔中Ⅰ号断裂带和塔中45井三维模拟区O〓灰岩的构造应力场和应变场，结果表明：研究区主应力方向为北东～南西向，第二期的构造扭动使其由北向东发生了一定的偏转，但总的方位变化不大；O〓～S～D时期，塔中地区构造运动较强，研究区大部分处于高应力状态，岩石破裂程度较高，而岩芯观察结果也证实了这一结果，即O〓灰岩地层中早期形成的构造结构面比较发育，单个结构面的规模也较大；C～P时期，岩石的破坏程度较早期有所提高，主要表现在两个方面，一是各局部区岩石的破坏程度普遍有所提高；二是各个级别破裂区的分布范围相应地扩大了；研究区应力分布表现出明显的不均匀性，特别是剪应力，无论是O〓～S～D时期，还是C～P时期，都有很大的差异性，特别是在小断层的端部，剪应力比较集中，而且在断层的两盘，剪应力方向和大小都变化极快。

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％。