等环的

In chapter 1, we simply introduce the background and the present state of the theory of semirings; for the sake of convenience, we introduce some fundamental knowledge about idempotent semirings.

第一章，我们对半环理论研究的背景、现状和幂等元半环的基础知识作了简要的介绍。

Methods SF -rings are discussed on condition that every idempotent element is left semi-center and SF -rings are LANE-ring.

在幂等元是左半中心的和LANE-环的条件下讨论SF'-环。

The company's products include: silane coupling agent KH-550, KH-560, KH-570, KH-602 and other models, perchlorethylene resin, high-chlorinated polyethylene resins, pigments, PCE, ethyl cellulose, poly vinyl perfluoro-C (F46 fluorine resin) silicone oil, dichloromethane, dichloroethane, cyclohexanone, protopine, ion exchange resin, epoxy resin, PF and other chemical raw materials, are manufacture of fine chemicals, adhesives, paint remover, paint, paint, antifreeze and other products of the basic raw materials.

本公司经营的产品有：硅烷偶联剂KH-550，KH-560，KH-570，KH-602等型号，过氯乙烯树脂、高氯化聚乙烯树脂、颜料、四氯乙烯、乙基纤维素，聚全氟丙乙烯树脂（F46氟树脂）硅油、二氯甲烷、二氯乙烷、环己酮、片碱、离子交换树脂、环氧树脂、PF等各种化工原料，是制造精细化工，粘合剂，脱漆剂，涂料，油漆，防冻液等产品的基本原料。

The organic compounds like cyanine, macrocyclic azotic compound, azo-metal complex, metal chelate, benzoheterocycle dye, have been applied to recordable optical discs as the recording materials.

菁类、大环氮杂、偶氮、金属螯合物、苯并杂环等类的化合物已被作为光记录材料进行研究。

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。

To discover new strobilurin analogues with high pesticidal activity, a series of new strobilurin derivatives containing substituted pyrazole and pyrimide ring, which included 124 novel compounds (73 compounds containing substituted pyrazole ring and 51 compounds containing substituted pyrimide ring) were designed and synthesized. In addition, 36 new intermediates were synthesized. Their structures were characterized by ~1H NMR and elemental analysis, partial compounds were characterized by MS and IR once again.

为了发现具有更好生物活性的新型Strobilurin类化合物，本论文在详尽总结文献的基础上，设计并合成了含吡唑和嘧啶环的新型Strobilurin类化合物124个，其中含吡唑环的新型Strobilurin类化合物73个，含嘧啶环的新型Strobilurin类化合物51个；未见文献报道的中间体36个，所合成的化合物经过~1H NMR、IR、LC-MS或元素分析等确定了结构。

To discover new strobilurin analogues with high pesticidal activity, a series of new strobilurin derivatives containing substituted pyrazole and pyrimide ring, which included 124 novel compounds (73 compounds containing substituted pyrazole ring and 51 compounds containing substituted pyrimide ring) were designed and synthesized. In addition, 36 new intermediates were synthesized. Their structures were characterized by 1H NMR and elemental analysis, partial compounds were characterized by MS and IR once again.

为了发现具有更好生物活性的新型Strobilurin类化合物，本论文在详尽总结文献的基础上，设计并合成了含吡唑和嘧啶环的新型Strobilurin类化合物124个，其中含吡唑环的新加热管型Strobilurin类化合物73个，含嘧啶环的新型Strob 加热管 ilurin类化合物51个；未见文献报道的中间体36个，所合成的化合物经过1H NMR、IR、LC-MS或元素分析等确定了结构。

CO2 and H2S exist in the hydrocarbon zone and foramtion water,as the accompany gases of petroleum and nature gaso or components of formation water,which will cause corrostion to the cement sheath under certain conditions of humidity and pressure.It will decrease the cement sheath's alkalinity,which results in the decrease of cement sheath's strength,permeability increase,and places a premium on fluid channeling and borehole wall sloughs accident in plastic formation,shortening the oil- gas well's production lifetime and giving rise to tremendous ecomonic losses.

CO2和H2S作为石油和天然气的伴生气或地层水的组分存在于油气层或地层水中，在一定的湿度及压力条件下会对固井水泥环产生腐蚀作用，从而降低水泥环的碱性，使水泥环强度下降，渗透率增大，并诱发流体窜流、塑性地层井壁跨塌等事故，从而缩短油气井的生产寿命，造成巨大的经济损失。

In order to get high thickness and good anticorrosion, CJ9501 finish can be matched with 036-1, H52-60 epoxy coating. The method is to paint two coats epoxy primer, then to paint two coats CJ9501 finish.

B、为实现较高的膜厚和更长的防腐效果，CJ-9501面漆也可与036-1、H52-60等环氧底漆配套使用，即先涂两道环氧底漆，再涂两道本面漆。

To search for DNA-based sex identification candidate marker of poultry, whole blood DNAs from each five males and five females of Native Chicken, Brown Tsaiya, Muscovy, White Roman Goose, Bronze Turkey, Australian Black Swan, Quail and Ring-necked Pheasant were analyzed by spindlin gene. PCR products were amplified by SPIN12 and SPIN13 primer kits. Different electrophoresis patterns showed correct gender for each bird species. The accuracy of sex identification was 100%. Furthermore, the PCR DNA fragments of the same gender were different among bird species.

以土鸡、褐色菜鸭、番鸭、白罗曼鹅、青铜火鸡、澳洲黑天鹅、鹌鹑、环颈雉各5公5母个体 DNA作为模版，应用SPIN12及SPIN13引子组进行聚合酶连锁反应后，由电泳分析结果显示所有受检物种之雄性与雌性均呈现不同样态，且与实际性别吻合，证实此引子组可成功鉴别鸡、鸭、番鸭、鹅、火鸡之性别外，亦可作为黑天鹅、鹌鹑、环颈雉等鸟类的性别遗传标记，从不同物种所呈现的DNA片段亦有变异存在。

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。