无体系的

With trimethyl,4-dodecylbenezyl ammonium chloride and 18-crown-6 as pase-transfer catalysts, the azidation of polyepichlorohydrin in poly and H2O were studied. The reaction discipline and mechanism were discussed. The results show that the system with trimethyl, 4-dodecylbenezyl ammonium chloride as phase transfer catalyst and PEG as medium is a safe and effective approach to glycidyl azide polymer preparation, and azidational ratio of PECH can reach 97% above within 15 h.

研究了氯化十二烷基苄基三甲基铵和18-冠－6为相转移催化剂时端羟基聚环氧氯丙烷在聚环氧乙烷和水为介质中的叠氮化反应，探讨了反应规律和反应机理，结果表明：以PECH为介质，十二烷基苄基三甲基氯化铵(TMDA-1)为相转移催化剂的反应体系，可在15h内使PECH叠氮化转化率达到97%以上，无主链断裂等副反应，是一条较为安全快速的制备叠氮粘合剂的方法。

The calculation result of molecular dynamics simulation was received using the minimization in molecular mechanics method, which indicates that the optimized configuration is one-to-one hydrogen bonds of the double chains of atactic PVA .

通过分子动态模拟，对所使用的两个具有无规结构的聚乙烯醇链进行能量优化，结果表明，当两个聚乙烯醇分子中的羟基形成了一对一的氢键时，能量最低，体系最稳定。

Unless most subsidies for renewables are phased out once a cap-and-trade system is in place, says Paul Bledsoe, a former adviser on energy to the Clinton administration, they risk creating a boondoggle akin to the proliferation of incentives for corn ethanol.

克林顿政府时期的一名能源顾问 Paul Bledsoe 表示，除非在限额交易体系实行之时，可再生能源获得的补贴也逐步消除，否则后果将会与猛增玉米乙醇刺激措施的结果相似，都是在做浪费时间金钱的无用功。

Our factory specializes in the production of automotive brake master cylinder, brake wheel cylinders, clutch master cylinder, clutch cylinder, such as at a variety of products, factories have accumulated years of professional production experience, production, testing equipment and technology with the advanced level, not only have multiple high-precision Instrument lathes, coreless grinder, honing good can automatically keep out mill, advanced CNC machining equipment to form a number of rough, finishing process lines, but also the introduction of CAD software and product design to improve the integration of electrical and mechanical testing equipment and so on, in the same industry leading position.

本企业按ISO9001质量体系生产，专业生产汽车制动主缸、制动轮缸、离合器主缸、离合器分缸等多种产品，工厂积累了多年的专业生产经验，生产、检测设备及工艺具有先进水平，不仅拥有多台高精度仪表车床、无芯磨床、善能珩磨、自动搪磨机、先进的数控加工设备形成多条粗、精加工流程线，还引进CAD产品设计软件及完善的机电一体化的检测设备等，处于同行业领先地位。

In the absence of organic solvent and phase-transfer reagent, the catalytic oxidation of cyclo- hexene to adipic acid with aqueous 30% hydrogen peroxide can be achieved in the presence of tungstic acid/acidic organic additive.

以钨酸/有机酸性添加剂为催化体系，在无有机溶剂、相转移剂的情况下，催化 30%过氧化氢氧化环己烯合成己二酸。当钨酸∶有机酸性添加剂∶环己烯∶过氧化氢=1∶1∶40∶176(摩尔比，钨酸用量为 2.5 mmol)时，使用有机酸性添加剂考察钨酸的催化性能，结果表明以钨酸/间苯二酚催化氧化环己烯的催化效果最优，反应 8 h 时己二酸分离产率达 90.9%、纯度为～100%；而不使用有机酸性添加剂时，己二酸分离产率只有 72.1%，产品纯度为 96.2%。

The silicone rubber membrane used in SRMBR is a polymer-made non-porous material. It is hydrophobe and non-permeable to inorganic salt, and has the high selective ethanol permeability. Compared to the conditional separation technology, the pervaporation through SRM has the advantages of low-cost and low-pollution, especially applicable to separating volatile matter from organic matter-water system or organic-organic matter system.

其中的硅橡胶膜作为一种均相聚合物材料无孔膜，具有不透无机盐成分、疏水和对乙醇有较高选择透过性等特点；与传统分离技术相比，硅橡胶膜的渗透蒸发分离过程具有低能耗、污染少等优点，尤其适用于在有机物-水或有机物-有机物体系中分离挥发性有机物组分，现已用于发酵下游产物分离处理的试验研究中，并取得初步成效。

Yongkang Hefa Tools Co.,Ltd.is a manufacturcr specializing in producing Auxiliary Air valves and carbon canisters of motorcycle,leisure vehicle,universal gasoline engine and automobile with Japanese technologies.it has obtained ISO9001:2000 certification and has several patents such as unspillable reed valve,combined gulp cylinder head ,ctc.or company is located in Baiyun Industry Area,Yongkang,a city of hardware in China with comfortable environment and convenient transportation With the first-class production ﹠ test equipment and abundant test methods,we have already gained the ability to establish a complete process line from rough machining to entire assembly.

永康市合发工具有限公司是一家专业生产摩托车、休闲运动车、通用汽油机、汽车用二次空气阀总成、碳罐的企业。公司引进了日本技术，。。。参考价格/报价： 0元/只永康市合发工具有限公司是一家专业生产摩托车、休闲运动车、通用汽油机、汽车用二次空气阀总成、碳罐的企业。公司引进了日本技术，通过 ISO ：9001：2000国际质量管理体系认证，并且拥有多项专利技术，如：无泄漏簧片阀，连体补气缸头等，具备年产二次空气阀200万套的能力。

Some examples are given. Some methods and fruits of the tech-economic evaluation for mining projects are used as reference. The re-evaluation of mineral resource is briefly introduced. It is detailed to convert the mining flotsam into resource. The paper presents a new method, comprehensive index method, to evaluate the actualization degree of wasteless mining.

文中借鉴了矿山项目技术经济评价方面的方法与成果，对矿产资源的再次评价及矿山废料资源化评价进行了讨论：提出了应用综合指数法对无废开采实现程度进行评价的理论体系；应用神经网络系统对矿业可持续发展进行评价，建立了相应模型及标准。

This is often slow because of the ink dry, especially the ink system gleyed binders and water or alcohols, esters formulation of organic solvents which lead to the development business card printing and membership card after monlchamus membrane surface matted or forming a fog.

这往往是因水墨干性慢，尤其是该墨体系里水型连结料与介质的水或醇、酯类有机溶剂的配方设计不合理，导致其制卡和会员卡制作后墨膜表面的无光泽或形成灰雾状。

In this paper,the phase diagram of the aqueous solution system of potassium chloride and ammonium sulphate is calculated,analyzed and compared with that of such aqueous solution system into which certain amount of methanol is added,and the yield of the reaction is caculated.

硫酸钾是一种优质无氯钾肥，由氯化钾与硫酸铵复分解制备硫酸钾是十分重要的生产方法之一，其反应可表示为2KCl+(NH4)2SO4=K2SO4+2NH4Cl该反应氯化钾转化成硫酸钾的转化率受到各组分在体系中的溶解度限制而较低[1，2]。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失