形式相同的

Saponins, steroid saponins, which are rich and play the most important physiologically active compounds in yam. The studies of steroid saponins of other plants found that glycone on saponins played an important physiological activity. Because of the structural differences between saponin glycosides with different forms and sapogenin resulting from the removal of glycone by hydrolysis on saponins , caused the different physiological effect.

山药含有丰富的皂，属类固醇皂，为山药所含最具生理活性的重要化合物；从其他植物类固醇皂的研究发现，醣基於皂的生理活性上扮演著相当重要的角色，其所接醣基的多寡与有无，醣基的组成、醣的键结型式、醣基链的长度及支链的有无等，皆会影响其生理功效；故不同形式配醣体的的皂，及水解后造成醣基去除而形成皂元，因其结构的不同，产生之生理功效亦不尽相同。

Of one of their religious services, in striking contrast to the lifeless formalism of the Church of England, he wrote: The great simplicity as well as solemnity of the whole almost made me forget the seventeen hundred years between, and imagine myself in one of those assemblies where form and state were not; but Paul, the tentmaker, or Peter, the fisherman, presided; yet with the demonstration of the Spirit and of power.

他们的宗教聚会与英国教会那种没有生气的形式主义大不相同，关于这一点，卫斯理写道：整个聚会的非常简单和严肃的精神，几乎使我忘掉了一千七百年的距离，而想象自己是在参加那些不重外表和不拘形式的聚会，乃是制帐棚的保罗，或是作渔夫的彼得所主持的；然而他们确有圣灵和能力的明证。

As the complete characteristic curves of reversible pump turbine are often used to calculate the instantaneous parameters, this paper studies the characteristic curve and the wicket closure and opening law in pumped storage plants.Chapter 1 presents the importance and the necessity of this study and reviews the previous related research on hydraulic transient process and valve regulation in pumped storage plants.Chapter 2 analyzes the six collected characteristic curves of reversible pumped turbine and studies their diversification from the point of view of specific speed. The six collected discharge and moment curves with maximum efficiency have been fitted to piecewise continuous curves. This curve-fitting procedure is listed.Chapter 3 takes Liyang Pumped storage plant as an example and analyzes the effect of different characteristic curves on regulation guarantee parameters and the variety of its trochoid during the same operation status.Chapter 4 takes three pumped storage plants with different heads as examples and studies the characteristic of coordinated closure with wicket gate and ball valve and its effect on dynamic pressure in the spiral case, inlet pressure in the draft tube and the rise of rotating speed.Chapter 5 summarizes this paper and point out what should be done in the future research.

由于在过渡过程分析计算中，需要频繁利用可逆式机组的全特性曲线推求机组的瞬时参数，所以本文就特性曲线及关闭规律问题进行了研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水力过渡过程、抽水蓄能电站及阀调节的研究成果，在此基础上提出本文的研究内容；第2章，针对收集到的六套特性曲线，从比转速的角度出发来研究可逆式机组特性曲线的变化规律；并对六套曲线的最高效率流量和力矩曲线进行分段拟合，得到各分段函数的具体形式，再通过举例说明最高效率曲线的拟合步骤；第3章，以溧阳抽水蓄能电站为实例，分析讨论不同比转速特性曲线对调保参数造成的影响及对于相同工况其轨迹线的变化；第4章，结合高、中、低三水头段抽水蓄能电站，在导叶直线关闭的基础上，研究导叶与球阀协联关闭规律的特点及对蜗壳动水压力、尾水管进口压力及转速上升造成的影响；第5章，总结全文，提出今后研究的重点和方向。

Examining the rule of its development is very important, and will play a strategic role in adjusting and controlling the real estate for government macroscopically Real estate is a industry which has very much oligarchic factors.

房地产行业是具有很大垄断因素的行业，根据房地产业的产品异质、资金密集、周期长的特点，推断出房地产业的合理的市场结构形式，应与发达国家的房地产市场结构模式相同——为寡头垄断的市场结构，即由几家左右的企业垄断整个市场的半数甚至更多市场份额。

If it be shown in a reasonable number of well-authenticated cases that these conditions — exogamy as tribal law, and hostility as the prevailing relation of separate tribes towards each other — exist or have existed, accompanied, as might have been expected, by a system of capturing wives, we shall be justified in concluding — failing the appearance of any phenomena inconsistent with such an explanation — that the same conditions have existed in every case where the system of capture prevailed, or where the form of capture has been observed as a ceremony of marriage. Nothing more than this is necessary to satisfy the conditions of a sound hypothesis.We are in a position to do this and more.

并且如果它被证明在一个合理数目的被充分鉴别的案例中这些条件（异族结婚为部落法律，以及对抗是分离的部落相互对待的主要关系）存在或曾经存在，伴随着似可预期的一种猎妻制度，我们将被证明在做出结论时是正确的（舍弃与这样一种假设不协调的现象的出现）这些相同条件存在于流行劫掠制度、或者劫掠形式在婚礼中被观察到的地方的每一个案例。

Based on these, an improving μ-synthesis is presented, with which the high-purity distillation is designed well. 2. The robust performance problem of MIMO plant is explained with the plant direction angle, which shows that the robust performance varies with different input uncertainties and the μ-synthesis should be applied correctly according to the uncertainty structure. 3. Condition number and bandwidth are the important items for robust performance design in MIMO system. The H〓 two-block problems can not deal with the robust performance design of MIMO system because of the condition number cancellation. A general μ-synthesis procedure for MIMO system with uncertainties is presented. 4. For the SISO system, the object function in robust performance is amplified by at most 〓 than that of H〓 two-block problems in value: So the robust performance of SISO system can be done with the H〓 two-block problems to avoid the complicated μ-synthesis procedure. 5. All the conclusions and methods presented in this paper are demonstrated by some typical design examples.

从而形成一种改进的μ综合方去，并对精馏塔病态对象进行了鲁棒性能设计，得到令人满意的结果；（2）利用对象的方向角解释了MIMO对象鲁棒性能设计出现问题的原因，并提出不同输入摄动形式下系统的鲁棒性能问题也并不相同，因此利用μ综合处理鲁棒性能设计时，应根据不同的摄动情况采用不同的结构进行设计：（3）条件数问题和带宽问题是MIMO系统鲁棒性能设计的两个主要问题，指出由于条件数对消的存在使得一般H〓两块问题无法处理MIMO系统的鲁棒性能设计，而μ综合方法则是处理MIMO系统鲁棒性能设计的有效方法，并给出了其处理MIMO系统鲁棒性能设计的一般性方法；（4）提出对于SISO系统H〓两块问题（S/T问题、S/KS问题）的设计指标函数与鲁棒性能设计的μ指标函数在数值上最大差〓倍，因此对于一般SISO系统的鲁棒性能设计可以简单地用一般的H〓的两块问题处理，而避免μ综合设计的复杂过程；（5）本文中提出的结论和算法都利用H〓/μ发展中的典型例子：Doyle-Stein问题，Safonov的战斗机模型，精馏塔对象等进行了设计验证。

Based on the practice of the use of φ95mm subsurface sucker rod pump in Shengtuo Oilfield in recent years, the causes of the failure of the pump are analyzed, and relevant precautions are put forward:(1)selecting oil wells with sufficient fluid supply for pumping;(2)under the condition of the pump efficiency being the same, the submergence depth of the pump being somewhat larger than that of the small pump, and 450～500m being feasible;(3)adopting Grade H ultrahigh-strength rod string and fixing a sinker bar at the bottom of the rod string;(4)selecting long stroke and low pumping speed, and more than 5m stroke and less than 6min-1 pumping speed being recommended;(5)adopting zirconium oxide valve ball and seat ＋ spray welded plunger ＋ nitrided barrel.

根据胜坨油田近几年采用φ95mm有杆抽油泵提液的实践，分析了造成这种抽油泵失效的原因，包括与其配套的脱节器失效、抽油杆断脱、泵漏、电动机不配套和生产管理不善等。为增强泵的提液能力和工作可靠性，提出5 项预防措施：(1)选择有充足供液能力的油井；(2)在保持相同泵效的情况下，泵的沉没度应略大于小泵，推荐按450～500m设计；(3)采用H级超高强度抽油杆柱，并在杆柱底部配置一定重量的加重杆；(4)采用长冲程、低冲次的参数匹配，推荐光杆冲程大于5m，冲次小于6min-1；(5)为提高泵筒、活塞和阀座的防腐耐磨性，推荐采用&氧化锆阀球和阀座+喷焊柱塞+氮化泵筒&的结构形式。

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。