查询词典 D.A.

Finally,we deal with the stability problem of the Bergman kernel,i.e.,do theBergman kernels of〓converge to the Bergman kernel of D on compact subsets of〓where〓is a sequence of bounded domains converges to a bounded domainD in the sense of Boas?

最后我们研究Bergman核的稳定性问题，即，若一列有界域〓按Boas意义下收敛于一个有界域D，是否有〓的Bergman核在〓上局部一致地收敛到D上的Bergman核？

They include the fundamental concepts of jet bundle geometry needed in describing time-dependent mechanical systems, decomposition of jet bundles into a direct sum according to the constraints, horizontal distributions on constraint mainifolds, the global formulation of D'Alembert-Lagrange's equations and Chaplygin's equations, and nonholonomic mechanics on a Riemann-Cartan manifold. Meanwhile, the geometric significance of Chetaev's conditions and $\rd$-$\delta$ commutation relation are discussed in depth.

本文主要综述非完整约束系统几何动力学的外附型和内禀型Lagrange理论，包括非定常力学系统所需要的射丛几何学的基本概念、射丛按约束的直和分解、约束流形上的水平分布、 D'Alembert-Lagrange方程与Chaplygin方程的整体描述、以及Riemann-Cartan流形上的非完整力学，文中对Chetaev条件和d-δ交换关系的几何意义作了深入讨论。

Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.

本文在分析自动增益控制AGC原理的基础上，采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块；采用高速A／D转换器LTC1405作为回波信号检测模块；采用复杂可编程逻辑器件CPLD作为核心控制模块，构成数字自动增益控制电路，并设计粗调和细调步进控制相结合的算法，对回波信号的增益进行精确而快速的调节控制，使回波信号振幅快速稳定在设计指标范围内，利于接收机后续信号处理电路对回波信号作进一步的处理。

June 26. Better; and having no Victuals to eat, took my Gun, but found my self very weak; however I kill'd a She-Goat, and with much Difficulty got it Home, and broil'd some of it, and eat; I wou'd fain have stew'd it, and made some Broath, but had no Pot.

六月二十六日好了一点。因为没有东西吃，就带枪出门。身体十分虚弱，但还是打到了一只母山羊。好不容易把山羊拖回家，非常吃力。烤了一点山羊肉吃。很想煮些羊肉汤喝，可是没有锅子。

Sunshine is a significant source of vitamin D because UV rays from sunlight trigger vitamin D synthesis in the skin.

阳光是一个重要来源的维生素D ，因为阳光紫外线引起维生素D的合成皮肤。

An early baby-boomer, Mr Gekoski comes of age in the company of J.D. Salinger's "The Catcher in the Rye" and Allen Ginsburg's "Howl", delves into psychoanalysis in the dubious company of R.D. Laing, discovers philosophy guided by René Descartes, David Hume and A.J. Ayer and literature with W.B. Yeats and Carl Hiaasen.

杰柯斯基生于婴儿潮早期，读着J·D·赛林格的《麦田里的守望者》和艾伦·金斯伯格的《吠》长大；后来他抱着怀疑的态度阅读R·D·莱恩，进而开始了对心理分析学的深入研究；又通过笛卡尔、大卫·休谟和艾尔的著作对哲学有了一定了解；他在叶芝和卡尔·海森身上学到了文学。

Methods 107 cases of reflux esophagitis were divided into 3 groups. Scheme A(n=33),domperidone (10 mg po,tid);Scheme B(n=38), Ranitidine bismuth citrate (350 mg,po,bid ) and Scheme C(n=36), omeprazole(40 mg,po,qd) for 4 weeks. Data was evaluated using the pharmacoeconomic costeffectiveness.

将107例返流性食管炎患者随机分为A、B、C三组，A组（n=33）予多潘立酮10 mg，口服，3次/d；B组（n=38）予枸橼酸铋雷尼替丁350 mg，口服，2次/d；C组（n=36）予奥美拉唑40 mg，口服，1次/d，疗程4周。

METHODS: Eighty cases who had undergone renal transplantation were randomly divided into 2 groups:① preemptive therapy group (n=40), who were given ganciclovir (GCV, 250 mg/d) once at least 1 CMVPP65 positive cell per 2.0×105 PBL till the antigenemia became negative.② Control group (n=40), who were given universal twoweekprophylaxis with GCV (250 mg/d) beginning at the 3rd week after transplantation. A 3month followup was conducted and the efficacy and costeffectiveness of the 2 groups were compared.

将尸肾移植后患者80例分为两组：①早期治疗组（n=40），即在术后若监测到CMVPP65抗原血症阳性，则给予更昔洛韦（250 mg/d）治疗，直至抗原血症转阴；②对照组（n=40），所有患者从移植后第3周开始均给予更昔洛韦（250 mg/ d）治疗，持续2 wk，随访时间3 mo，观察两组对CMV疾病的预防效果。

A pair of optical isomerism amphiphlic molecules L-C10HLN-(4-decaoxygen-2-hydroxybenzene methylene-L-leucine and D-C10HLN-(4-decaoxygen-2-hydroxybenzene methylene-D-leucine were synthesized.

製备了一对旋光异构的两亲分子L-C10HL（N-（4-癸氧基-2-羥基苯亚甲基）-L-亮氨酸）和D-C10HL（N-（4-癸氧基-2-羥基苯亚甲基）-D-亮氨酸）。

Undeterred, he founded I.F. Stone's Weekly, a muck-raking journal that D.D.

然而他没有被吓住，并创建了斯通周刊，这本刊物被他的传记作者，同样也是丑闻揭露记者，D.D。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。