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On the basis of the modification theory, relative modification concept of cycloidal gear pair and the appraisal index of the initial backlash are built to solve the problem that cycloidal gear works unsmoothly in pin wheel of the full-hydrostatic steering control units. The major goal of modification is a uniformity of initial backlash, so equidistance modification that has good effect on improving quality of fluid cycloidal pair is chosen.

为解决全液压转向器转子转动不灵活的问题,在分析现有摆线针轮啮合副齿廓修形理论基础上,建立摆线副修形的相对性概念和间隙分布评价指标,提出无系杆摆线副修形的主要目标应使初始间隙分布均匀,选择的修形方式为等距修形。

By Ensemble-averaged Method, the mean field was got to show the 3D structure of flow. By Phase-locked Averaged Technique, the periodic mean field was got to reflect the periodic unsteady characteristic. The 3D structure and the periodic unsteady characteristic of the unsteady flow within the vaneless and vaned diffuser were discussed through analyzing the mean field and the periodic mean field.

离心风机扩压器内非定常流动的实验研究本文完成了离心风机两种结构条件下无叶扩压器、有叶扩压器内部的非定常流动瞬态全流场的实验测量,获得了不同运行工况下PIV的瞬态流谱,为研究扩压器内部非定常流动提供了基础实验资料。

The next instrumentality by which the adaptation of law to social wants is carried on I call Equity, meaning by that word any body of rules existing by the side of the original civil law, founded on distinct principles and claiming incidentally to supersede the civil law in virtue of a superior sanctity inherent in those principles.

法律用以适应社会需要的其次一个手段,我称之为&衡平&。这个名词的含义,是指同原有民法同时存在的某一些规定,它们建筑在各别原则的基础上,并且由于这些原则所固有的一种无上神圣性,它们竟然可以代替民法。

Through measuring the gel time and the unconfined compression stre- ngth of cement-waterglass-clay specimen, this paper, using orthogonal method, analyzes the effect of different water-cement ratio, different admixing quantities of waterglass and different clay content on specimen strength and presents the optimal dispensation formula for two-fluid process of cement-waterglass.

本文通过水泥—水玻璃—粘土试件凝胶时间的测定及无侧限抗压强度测定,用正交方法分析了不同水灰比、不同水玻璃掺量及不同粘土含量对试件强度的影响,提出了水泥—水玻璃双液浆的最优配方,基本解决了旋喷施工时造成的基础瞬时沉降问题,为旅喷注浆的设计与施工提供了依据。

Whenever possible, the examiner should provide documentary evidence regardless of publication date (e.g.,scientific or technical journals , excepts from treatises or books, or U.S. or foreign patents) to support the factual basis for the prima facie showing of no specific and substantial credible utility .

可能时,审查员应当提供文献证据(例如,科学和技术杂志、论文或书的摘录、或美国或外国的专利)以支持初步认定无具体与实在的可信的实用性的事实基础。

Upon the basis of the design of the electrode for blisk EDM finishing,the searching of an interference-free path for feeding an electrode through twist channels of a rimed blisk is carried out, in which the ker-nel problem is the determination of the electrode kinematic constraints.

在涡轮叶盘EDM精加工中电极的设计的基础上,进行了电极在带冠叶盘弯扭狭窄通道中无干涉进给轨迹的搜索,其中的核心问题是电极运动约束条件的确定。

In order to overcome the restriction of raw materials in producing humic acid silicified products, a new technology with humic acid and silicified agent as the main raw materials is developed, based on abundant tests.

针对目前生产腐植酸硅化产品原料受限的缺点,在大量试验的基础上,确定了一条以腐植酸和硅化剂为主要原料的生产工艺,合成了一种与有机硅腐植酸钾性能相当的硅化腐植酸钠产品GFN-1,对其常规性能指标和在清水及无固相聚合物钻井液体系中、在膨润土浆和低固相钻井液体系中应用指标,耐温性能进行了对比实验。

This investigation was to establish a simplified culture system to isolate and passage brain tumor stem cells from human medulloblastoma, observe their proliferation and differentiation, and determine the expression of normal neural stem cell antigens, CD133 and Nestin, in BTSCs. METHODS: Eleven specimens of medulloblastoma were acutely dissociated and triturated into single cells without trypsin digestion.

本研究旨在利用简化的无血清培养基和悬浮培养方法,从人髓母细胞瘤中分离培养脑肿瘤干细胞,观察其在体外的增殖、分化,鉴定其特异性标志物CD133和Nestin的表达,验证肿瘤组织切片中CD133阳性细胞的存在,为脑肿瘤干细胞的进一步研究打下基础。

The cost performance of product was analyzed. The results show that the cost performance of product manufactured by this time had been close to asbestos paper. With improving formulation and techniques, it can reduce cost more and more. It could lay a foundation for industrialized production.

对所研制的无石棉胶乳抄取纸的技术经济性进行了分析,本次开发研制的产品价格已经接近石棉纸,且通过改进配方与工艺,进一步降低价格,可以获得更大的经济和社会效益,为以后的工业化生产奠定了基础。

Based on the solution of the collapse load of LTA straight pipe and the stress level of elbow without defect,the solution of the collapse load of LTA pressurized elbow is presented.The way to assess the safety of LTA of pipe bend is given.

本文在对局部减薄直管的极限载荷和无缺陷弯头的应力状态进行研究分析的基础上,提出了内压作用下局部减薄弯头极限载荷的计算式,并给出评定局部减薄弯头安全性的方法。

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She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了,但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场,你等着挨绳子吧!

Several theories about reigniting and extinguishing of the arc have been refered.

本文综合考虑了几种电弧重燃和熄灭理论。