价廉的

We have used GC to follow up the formation of epoxy acid and established the acidify condition; we have done series of parallel experiments to better the pivotal condensation reaction between acid and amine; In the cyclization step, we use cheap and available reagent-Lithium amide , rather than expensive LiHMDS, to proceed the reaction; and at last, we introduced green reagent-ozone to clear the phenyl group of nitrogen to avoid using heavy metal reagent-CAN. The total yield for this method is 29.8%.

通过GC监测，确定环氧酸的最佳酸化条件；对关键的酸和胺的缩合步骤，平行试验了多种条件；在环合一步，用价廉易得的氨基锂及催化量的HMDS代替昂贵的LiHMDS进行反应；氮上苯基的脱除采用臭氧，避免了重金属试剂-硝酸铈铵的使用，总收率为29.8％。

THE FIRST TOTAL SYNTHESIS OF TAXAMAIRIN B Taxamairin B, representive of rare naturally-occuring rearrang-ed 9(10→20)-abeo-8, 11, 13-triene diterpenoids, has been firstsynthesized by a eleven-step route in an overall yield of 8.19%,starting from commercially available catechol and 1,3-cyclohexan-dione. The improved Friedel-Crafts annulation, thermodynamicallycontrolled-geminal pairing methylation, the selective oxidation ofallyl group and the selective reduction of the less-hindrancecarbon-carbon double bond are the key steps.

二。美丽红豆杉素B的全合成研究 1，美丽红豆杉素B的首次全合成以价廉，易得的邻苯二酚和1，3-环己二酮为原料，经过改良的Friedel-Crafts烷基化反应，热力学控制的α，β-不饱和酮结构的α一位双烷基化，烯丙位的选择性氧化，以及选择性还原位阻较小的碳碳双键等十一步反应，以8.19％的总收率首次完成了美丽红豆杉素B的全合成。

O matter what recreational activity your child is engaged in, the No-Spill Sport Sipper by Nuby is perfect for parents and children on the go. Nuby developed the Sport Sipper with an innovative, ergonomic shape with easy grips that ensures a comfortable and secure grasp for you child. Also included is the unique soft silicone straw with a built-in valve that opens with sucking action and closes when not in use The Nuby Sports Sipper is also BPA free!

uby公司一直坚持不懈，在设计，产品质量和发行普及极力要求完美， Nuby不仅要求产品有效，还要求安全，价廉和美丽的外观， Nuby的消费者对其产品的使用满意度都很高，他们感觉他们为自己的宝宝做对了选择，Nuby就是他们最好的选择，Nuby 对自己产品的安全性和各方面指标远远高于市场对婴幼儿用品所规定的标准。

Recently years, with the increasing concern on the environmental of human being lived, the use of water as a medium in organic reaction has received considerable attention due to its several advantages, for example, it is cheaper, nonflammable, nontoxic and easily available on the earth, and had incommutable advantages relative to organic solvents.

随着人们对生存环境的日益重视，以水作为溶剂的有机反应的研究越来越受到人们的关注，这是由于水作为反应介质，具有价廉、易得、不可燃、无污染等优点，具有有机溶剂无可取代的优越性。

The Nibbler is a great way to introduce soft solids when your child is ready. The Nby Nibbler allows your child to eat whole foods without the risk of choking. With the "Squeeze and Twist" Locking System keeps child from opening, your child can safely use without opening; meanwhile it is easy as 1-2-3 for parents to place food inside! Suggested whole foods include: frozen fruits, fresh fruits, ice chips, veggies, and other similar foods.

Nuby 公司一直坚持不懈，在设计，产品质量和发行普及极力要求完美， Nuby不仅要求产品有效，还要求安全，价廉和美丽的外观， Nuby的消费者对其产品的使用满意度都很高，他们感觉他们为自己的宝宝做对了选择，Nuby就是他们最好的选择，Nuby 对自己产品的安全性和各方面指标远远高于市场对婴幼儿用品所规定的标准。

The introduction of cheap protonic acids can accelerate the formation of an active enanmine intermediate and stabilize the transition state by hydrogen bonding. Consequently, catalytic activity and enantioselectivity of the catalysis system are remarkably increased.

价廉易得的质子酸的引入不仅可促进活性中间体烯胺的生成，并可通过形成的氢键稳定反应的过渡态，从而显著提高该催化体系的催化活性和立体选择性。

This method can reduce sludge production radically and virtually. The effectiveness of eight metabolic uncouplers in reducing sludge production from activated sludge process were compared to screen effective, cheap and non-toxic available uncoupling chemicals and determined the long-term uncoupler effects of 3, 3', 4', 5-tetrachlorosalicylanilide in activated sludge batch cultures.

首先比较筛选了对污泥的减量化效果好、价廉、无毒的化学解偶联剂；在此基础上，研究了添加3，3′，4′，5-四氯水杨酰苯胺的分批活性污泥工艺的剩余污泥减量化效果，以及对工艺运行效能和污泥性能的影响；着重进行了添加TCS的活性污泥工艺、好氧—沉淀—缺氧工艺、添加TCS的OSA联合工艺的连续运行试验研究。

It has research,there are many excellent technicians and anagers,according to their have gotten rich experience of machine manufacturing the company has made a lot of reliadl and high precision glass processing machine,such as Tamglass Furnace ,Straight-line Grinding Machine、Straight-line Beveling Machine、Complicated Shape Edge Grinder、cutting Table、Edging Machine、Drilling Machine,Heat Bending Fumace、Washing and Drying Machine、Sand Blasting Maching,and so on,they have complete varieties and models, which can provide different needs in different level and perfect service afer sale.

经过不断的探索、研究、积累了丰富的生产实践经验。本公司以雄厚的技术力量，结合国内外先进科技，生产出稳定、可靠、精确度高的玻璃深加工机械，如钢化炉、直边机、斜边机、异形机，多功能切割机，钻孔机，清洗机，夹胶机，全自动喷砂机，上片台等。而且还不断推陈出新。产品全、种类多，为您提供不同层次的需要和完善的售后服务。&优质、价廉、面广&是公司的经营宗旨。&求好、求实、求新&是公司的发展目标。凌智人将与海内外朋友携手并进，共创玻璃深加工机械制造业的辉煌。

Firstly, we propose solid-state continue-wave laser to crystallized poly-Si films, the distinction of excimer laser, CW-laser possessed high stability, reliability, durable and low-cost. In this way, we used laser scanning speed and energy to analysis a status of grain lateral growth and crystallizes mechanism for various condition, furthermore, we succeed to crystallize great grain size more than 10 μm. To compare excimer laser crystallization and Sequential lateral solidification, CW-laser don't needed extra procedure to carrier out large grain size.

首先，吾人提出有别於传统准分子雷射结晶技术的固态连续波雷射横向再结晶技术，固态连续波雷射具有高稳定的特性且相较於准分子雷射具有可靠、耐用、价廉且维护成本低的优点，在此我们利用不同的扫描速度与雷射能量，分析出在不同条件下的横向结晶状态与其成长机制，并且成功的成长出大於10 μm的晶粒大小，相较於准分子雷射结晶与循序性侧向结晶，固态连续波雷射不需额外的步骤即可达成大晶粒成长。

The most widely used in industry, because the price too expensive,is not adopted, if you can, with moderate intensity (about 20g/d, modulus 1000g/d, elongation 5%) fiber to replace lifesaver, there will be thousands of tons annually, and can replace the demand of international cable industry, domestic customers, enhance the ChuanBoYe ship cable export competitiveness.

在应用最为广泛的缆绳业上，由于价格过于昂贵，未被采用，若能以价廉，质量中等（强度约20g/d，模量1000g/d，伸长5%）的纤维来取代尼龙绳，每年将有上千吨的需求，并可取代国际缆绳业、国内船舶业的大量客户，增强船舶缆绳的出口竞争能力。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。