七价的

We said we were going to try and head for the beach. So a few phone calls later me, Alex, her and her poor boyfriend (he had come away for a romantic holiday with his girlfriend and was spending all his time with us!) got into a very much bargained-down taxi and set off for the 1/2 hour drive to Yalong Wai Bay and the 7km of white sand beach that the Lonely Planet had promised us.

听了我们这么一说，她打了几个电话，然后Alex和我，Tracy还有她那可怜的男朋友（本打算和她度一个浪漫的假期，没想到都磨在我们身上了）一起，叫了辆出租车并和司机杀了价，大约半小时后，我们到了亚龙湾，这是Lonely Planet承诺我们有七公里长白色海滩的地方。

Years 9 on 9, China National Petroleum Group to Australia's largest oil and gas producer Woodside Petroleum to buy up to 45 billion Australian dollars worth of liquefied natural gas, the Bank of China the same day the conversion price, 1 Australian dollar to 6.2430 yuan to calculate, when the China National Petroleum Corporation's property for 280.935 billion yuan.

二千零七年9月9日，中国石油天然气集团对澳大利亚最大的石油和天然气生产商伍德赛德石油公司购买最多45亿美元的液化天然气，中国银行的同一天，澳元兑换价， 1澳元六点二四三零元计算，当中国石油天然气集团公司的财产为2809.35亿元。

In Chapter 7, separation and determination of CrO〓 and Cr〓 simultaneously by CE were described.

在第七章，建立了用毛细管电泳对两种不同价态的铬离子进行分离和测定的方法。

The extraction equilibrium constants of Nd , Eu , Am in the system of seven monoacidic organophosphorus compounds dodecane 1. 0mol/l NO〓are reported. The dependency of the extractability on the PO〓function group、bonding charactor、metallic ion species and the structure of substitute has been examined.

给出了七个烷基磷酸的正十二烷熔液从1.0mol／lNO〓水溶液中萃取Nd、Eu、Am的平衡分配常数Kex，考察了萃取剂PO〓官能团、萃合物成键特性、金属离子及取代基结构与萃取性能间的关系，发现了：（1）可运用取代基自由能加和模型预测辛基膦酸辛基酯对La、Eu、Nd、Am等三价离子的平衡分配数据。

Seven inactivated tetravalent vaccines of Riemerella anatipestifer,of which three (1#,3#,7#) employed oil-emulsion,two(4#,6#) employed propolis,two(8#,10#) employed aluminum hydroxide as their basic adjuvants,were developed and compared by the methods as follows:challenges were performed by homologous virulent RA strains to measure their protective abilities;indirect enzyme-linked immunosorbent assay was used to monitor antibody production;lymphocyte transformation test was performed to study the expression of cell-mediated immunity.

本实验通过对供试鸭的攻毒保护试验、通过用ELISA方法对供试鸭特异性抗体消长规律的研究以及通过用~3H-TdR掺入法对供试鸭T细胞免疫水平的检测三个方面对所研制的七种不同佐剂类型的鸭疫里氏杆菌四价灭活苗的免疫原性进行了比较研究。

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。