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By the definition of Green-relation and the analogue of generalized Greens lemma, this paper first studied some properties of H-class、 D--class of rpp semigroups, then by left S-system 、-bisystem and tensor product, we described a blocked Rees matrix semigroup. Especially, the paper studied primitive rpp semigroups .

本文利用在rpp半群上定义的广义Green~(l-关系及相应的广义Green定理，首先研究了rpp半群H~(l-类、D~(l-类的若干基本性质，然后以左S-系、-双系和张量积作为工具，刻画了块Rees矩阵半群结构，最后从带零的本原rpp半群出发，构造出A型块Rees矩阵半群，并证明了一个半群S为本原rpp半群，当且仅当S同构于一个A型块Rees矩阵半群。

Firstly, this paper definited pseudometric d for n -foldproduct of σ-algebra A of subsets of a given set X , and definited indicator function ; secondly, gave the concept of differentiable of set function at S° and concept of partial derivative at S° with respect to the ith argument Si through indicator function, and defound the weak efficient solution of and optimality necessary condition; Finally, obtained three weak duality results and strong duality results under generalized convexity conditions.

首先，对已知集X的子集的σ-代数A的n-折积A^n，定义了伪度量d，给出了相应的特征函数〈h，Is〉；其次，通过特征函数给出了集函数在S 可微的定义及集函数在S 关于第i个变量Si的偏导数定义；给出了多目标规划问题的弱有效解概念及的最优性必要条件；最后，分别在目标函数和约束函数的3种较弱凸性条件下，研究n-集函数多目标规划问题的对偶问题，获得了3个弱对偶结果和强对偶结果。

Col.8 -- The surface regression, s, which is simply the summed D s values, plus an initial value, s o , shown in blue.

col.8 -表面上回归，硫，这只不过是总结d S值，再加上初始值，硫澳，以蓝色显示。

And when asked who he'd choose to spend a romantic holiday with, Henriksen replied, I'd go for Stig Tofting, but since he's straight, I'd say my client Ricky Martin .

"当问及他'd选择花一个浪漫的假期， henriksen回答说，"我更愿意去为掺混tofting ，但由於他的直，我宁愿说我的委托人瑞奇马汀。

To show his agreement on going to Mars 6. Which of the following best states Donal Trollop's idea? A. There is a plan to send humans to Mars. B. There are many reasons for going to Mars. C. Scientists become famous by doing research on Mars. D. It is possible to build an Earth-like environment on Mars. 7、Paul Davies points out that . A. humans need only a one-way ticket to Mars. B. two-way trips to Mars will be made safe soon C. it is easy to reduce the danger and cost of flights to Mars D. it is cheap to build an everlasting human settlement on Mars 8、What does Paul Davies think of human existence on Mars?

A、有个载人上火星的计划 B、有很多理由支持去火星 C、那些研究火星的科学家变得有名起来 D、在火星上制造一个类似地球的环境是可能的 7、Paul Davies指出： A、人类只需要去火星的单程票 B、火星的往返旅程将会变得安全 C、降低去火星的危险系数和经费是件很容易的事 D、在火星上建立一个永久的人类基地花费很少 8、Paul Davies 对于人类在火星上的生存有什么想法？

As raw materials,and under the condition of 1 250 ℃,the high iron belite aluminate cement is made,whose mineral ingredients are 51 %～55 % of C_2S,20 %～30 % of C_4A_3,and 12 %～25 % of C_4AF;and whose strength in 1 d cement can reach(35 MPa),and that of 28 d cement can reach(66 MPa).

用高碳粉煤灰及石灰石、石膏等为原料，在1 250℃条件下烧成了高铁贝利特硫铝酸盐水泥，其主要矿物组成C2S为51%~55%，C4A3-S为20%~30%，C4AF为12%~25%；水泥1 d强度达35 MPa，28 d强度达66 MPa。

H.伸缩环转动环伸缩环垫片前轴封 S D / L D / S L M E C H A N I C A L S E A L P U M P S SD/LD/SL SERIES PUMPS The SD/LD/SL series are dependable, self priming pumps. The full motor horsepower is translated into fow via the shaft. These pumps are used for a wide range of applications, from chemical transfer to process solution recirculation to waste treatment. This series is capable of self-priming up ro 20 feet of lift. The mechanical seal is a self-cooling, Tefon bellows which is cooled by the solution being pumped. The construction materials and seals avaiable make this pump extremely versatile. The horizontal design has a working temperature from167℉ to 194℉(75℃ to 90℃), depending on the material of construction, and can handle most chemical solutions. The SD/LD/SL series pumps are designed to run outside the tank or process module. The SD/LD series pumps incorporate a FRPP molded base, legs and pump-to-motor casing. There are no bolts or metallic parts in contact with the solution being pumped.

SD/LD/SL泵是可靠的自吸泵，马达全部的马力经由轴心完全转化为流量，此型泵广泛地使用於从化学药水循环或加工溶液循环到废水处理等各种用途，此型泵可自吸达20英呎，机械轴封是自我冷却的，经由抽送的溶液来冷却，可供应的不同结构材质及轴封使此种泵的用途非常多样化，依其结构材料的不同，其卧式设计的工作温度由75℃到90℃(167℉到194℉)，而且可处理绝大部份的各种溶液，SD/LD/SL是设计用於槽外或加工模组之用，SD/LD加入一个FRPP射出成型的脚座，脚架及泵到马达的外罩，没有螺栓或金属会接触到所抽送的溶液。

METHODS: D-galactose (1 000 mg·k-1·d-1 ) was injected into mice hypodermically for 8 weeks to induce aging animal model, and Vit-E (100 mg·kg-1; 250 mg·kg-1) was administered for 6 weeks by ig at the 3rd week of making model. After Vit-E treatment for 8 weeks, water maze test was used to determine the ability of mice's learning and memory. The activities of glutathione peroxidase and succinate dehydrogenase, the content of nitric oxide and activity of nitric oxide synthase in the brain tissue were detected separately.

小鼠连续皮下注射D-半乳糖（1 000 mg·k-1·d-1）8周制备衰老模型，并于第3周开始给予维生素E（100 mg· kg-1；250 mg· kg-1）处理；8周后采用水迷宫测定小鼠学习记忆能力，并取脑组织测定谷胱甘肽过氧化物酶和琥珀酸脱氢酶活性，测定一氧化氮含量和一氧化氮合酶活性。

In C and D, Kittel's analysis in "SBOT" is mostly followed, but not in all details, nor in his separation of the D material into various strata.

在C和D ，基特尔的分析& SBOT &主要是其次，但并不是在所有的细节，也没有在他离职的D材料到各个阶层。

Our company specializes in the creation of the valve handwheel, handle, bevel gear, worm gear boxes, valve stem, nuts and various valve accessories enterprise can also be in accordance with customer requirements, order a variety of different specifications of hexagonal, square heart, round hole Size of hand wheel of the Company since its inception has been committed to product innovation, and constantly develop new products, our customer-centered and quality as its core business philosophy, in order for the company's products to better serve the society serve the public, the company's strict production management system, continuous introduction of new technologies, new materials, new techniques, and is equipped with a set of complete machining equipment and sophisticated testing equipment to create the link axis hand wheel, hand wheel Fang, keyway hand round, hexagonal hand wheel, lever ball valve, butterfly valve handle, valve bevel gear, worm gear box, is the Quartet SL101-F type, cone Quartet SL101-Z type, is the Quartet SL104-F type, flower type is SL105 Quartet , cone Quartet SL-104-Z-type, hexagonal SL104-L-type, hexagonal SL101-L type, round type keyway SL101, SL104 keyway circular type, is the six-party type SL102, SL101-J-type keyway, keyway SL102-J-type , SL103-J-type keyway, keyway SB101-J-type, the second generation of new hand wheel, BA series bevel gear, WQDX3, QDX3, QDS3-S, QDX3-G, XQDX3, QDX3-CF, FQDX3, SQDX3 part series back to transformation of the valve device manually, QDX3-C, QDX3-D series valve electric part of the transition back to devices, valve cover series, bearing gland series, the electric-type bearing cap, with a round open cap, sealing the Block series, hand - hard hat round shields hexagonal locking nut series of the Company follow the "survive on quality, reputation and development" business philosophy and the integrity, service, communicate, progress, development.

本公司自创建以来，就一直致力于产品的技术创新，不断开发新产品，秉承以客户为中心，以质量为核心的经营理念，为使公司的产品能更好的服务于社会、服务于大众，公司实行严格的生产管理制度，不断采用新技术，新材料，新工艺，并配有一整套完善的机械加工设备和检测设备制造出精良的连轴手轮，方心手轮，键槽手轮，六角手轮，球阀手柄，蝶阀手柄，阀门伞齿轮，蜗轮箱，正四方SL101-F型，锥四方SL101-Z型，正四方SL104-F型，正四方SL105花型，锥四方SL-104-Z型，六角SL104-L型，六角SL101-L型，圆型键槽SL101型，圆型键槽SL104型，正六方SL102型，键槽SL101-J型，键槽SL102-J型，键槽SL103-J型，键槽SB101-J型，第二代新型手轮，BA系列伞齿轮，WQDX3，QDX3，QDS3-S，QDX3-G，XQDX3，QDX3-CF ，FQDX3，SQDX3系列部份回转型阀门手动装置，QDX3-C，QDX3-D系列部份回转型阀门电动装置，阀瓣盖系列，轴承压盖系列，电动型轴承压盖，圆开帽，上密封座系列，手轮护罩拼帽系列六角锁紧螺母系列本公司遵循&以质量求生存，以信誉求发展&的经营理念和诚信，服务，交流，进步，开拓。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。