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Company BDO is the world's most advanced to calcium carbide acetylene butanediol as raw material production facilities.

公司BDO是全球最先进的以电石乙炔为原料的丁二醇生产装置。

Nucleophilic opening of the terminalepoxide 57 by a lithium acetylide from 27 in the presence of BF3·EtO furnishedcompound 58, which had the skeleton of target molecule, subsequent conversionsinvolved the introduction of γlactone gave Annonacin.

然后以三氟化硼参与的炔负离子开环氧反应建立分子骨架，得到化合物58。随后经氢化，引入α，β不饱和丁内酯环、去保护等几步反应，就得到Annonacin。

The first torchbearer was Achaean Constantine Kondylis, the last one was Germanic Fritz Schilgen, who was an athlete of 1,500 meter race.

第一名传递火炬的是希腊人康斯坦丁·孔季利斯，而最后一名则是德国1500米赛跑运动员弗里茨·席尔根。

Premise Liquefied petroleum gas is derived from oil gas, natural gas, the gas production of refinery and petrochemicals. The main components are dimethylmethane, propylene, butane, butylene and such low class hydrocarbon. It's a gas with achromaticity and transparence; LPG is hardly dissolved in water, but dissolved in ethanol and aether, it can dissolve gas production, propagation oil and caoutchouc.

液化石油气（liquefied petroleum gas，LPG）是石油伴生气、天然气、炼油厂及石油化工厂的气体产品，经分离精制而来，其主要成分为丙烷、丙烯、丁烷、丁烯等低分子烃；无色透明，带有微弱的臭味；难溶于水，溶于乙醇和乙醚等，并能溶解石油产品，动植物油和天然橡胶。

The results show that the catalytic activity is mainly affected by the acid strength and number of acid center.

对合成甲基叔丁基醚反应的几种沸石分子筛进行研究，认为催化剂的活性主要受催化剂的酸强度及酸中心数影响。

TsOH-SBA-15 had higher catalytic activity than sulfuric acid with the same number of acid sites.

结果表明，该催化剂对冰乙酸和正丁醇的酯化反应具有较高的催化活性。

A process based upon solvent extraction has been developed for the recovery of phosphoric acid from a leaching liquor obtained by decomposition of phosphate rock with sulfuric acid.

本文采用二丁基亚砜作为萃取剂，对于用硫酸分解磷矿而得的粗磷酸进行多级逆流萃取及反萃取，以获得高纯度的磷酸和磷酸盐。

In order to explore the optimum condition of transition of Pb, the transfer behavior of Pb through the emulsion liquid membrane system of TBP-Span80-atoleine-kerosene was studied. The study analyzed the effect of Pb transport rate of membrane phase component, pH values in external aqueous phase, acidness in internal aqueous phase, rew and concentration of metal ions in external aqueous phase. In the case of the optimal technological conditions, the waste water of Pb, Cu and Ni was treated.

为了探求乳化液膜法迁移铅Pb(Ⅱ的最佳条件，采用磷酸三丁酯－Span80-液体石蜡－煤油乳化液膜体系研究了Pb的迁移行为，探讨了膜相组成、外水相pH、内水相酸度、乳水比、Pb起始浓度对Pb迁移率的影响，确定了最佳迁移条件，并在此条件下对含Pb、Cu和Ni废水进行了处理。

My company is a new East Co., Ltd. Shandong Taihe the "Mount Tai" brand,"Mount Tai Wang" brand of the total distribution Guangzhou, Guangdong Shanwei City Xinya Carpet Manufacturing Co., Ltd. Guangzhou total distribution, Jing DING Xing Group licensing of mineral wool acoustic board total domestic distribution, Kennedy Li metal and North Units wallpaper long-term partners, agents keep their building materials.

我公司是山东泰和东新股份有限公司的"泰山"牌、"泰山王"牌的广州总经销、广东汕尾市新雅地毯制造有限公司广州总经销、京联集团丁兴牌矿棉吸声板的国内总经销、坚丽轻钢龙骨和北台墙纸长期合作伙伴、保得建材代理商。

In this paper synthesis of butyl acrylate from concentrated acrylic acid is reported.

本文阐述了用高浓度丙烯酸为原料合成丙烯酸丁酯。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新