铈、与铈有关的或包含铈，尤指四价铈。
Of, relating to, or containing cerium, especially with valence3.
碳的化合价是四价。
本文主要讨论了四价铈产品中铈的价态分析问题。
This paper has discussed the problem about analysis of different valence states of cerium in ceric products.
总铈含量与四价铈之差为氢氧化铈中三价铈含量。
The content deviation between total cerium and ceric is just the content of trivalent cerium in the sample.
作了总硒和四价硒的回收，平均回收率为91—105％。
钯的，四价钯的：含有或指明含有钯的化合物的，尤指带有4价的。
Of or designating compounds that contain palladium, especially with valence 4.
氟离子与四价硒在不同浓度比例下混合作用，其拮抗作用程度不同，并呈一定规律性变化。
The combined action degree of fluoride and selenite varied with their different mixture ratios and changed in a regular way.
显然这看起来是一个问题，因为我们知道实际上，甲烷是四价的，而这告诉我们它仅仅是二价的。
So this should immediately look like a problem because we know, in fact, that methane is tetravalent, and this is telling us it's only divalent.
细胞中四价体的平均数目不仅在四倍体大白菜品系间存在着差异，在植株间也表现出明显地变化。
The mean numbers of the quadrivalents in the cells existed difference not only in the species but also in the individual plants of the autotetraploidy Chinese cabbage.
本文主要介绍有机硼试剂，包括烷基硼烷，烯基硼烷及一些四价硼酸盐类，在碳碳键形成中的应用。
The review deals mainly with the application of organoboron reagents including aikylboranes, vinylborancs and some organoborates in carbon-carbon bond formation.
结论所研制的综合培养基及多糖纯化的工艺具有较好的可行性，为四价脑膜炎球菌多糖疫苗的研制提供了试验基础。
Conclusion the developed synthetic medium and purification procedure were feasible and provided an experimental basis for the preparation of tetravalent meningococcus polysaccharide vaccine.
一种四价流行性脑脊髓膜炎疫苗（已在美利坚合众国获许可证）和一种预防脑膜炎A和C的七价疫苗（将于2007年注册）；
A tetravalent meningococcal meningitis vaccine (licensed in the United States) and a heptavalent vaccine protecting against meningitis A and C (to be licensed in 2007);
中金所为上述四张合约设定了一个3399点的基准价，略高于周四的收盘价。
The exchange set a base price at 3399 for all four contracts, slightly above Thursday's close.
星期四的发行价和当天股价的大幅的上升让人回想起雷曼兄弟破产之前的那段时间，收益大增的同时，亚洲股市出现又一轮的走弱。
The initial value and the sharp rise on Thursday recalled the days before Lehman Brothers collapsed, and the gains bucked another weak session for Asian stock markets.
该公司在深圳上市，其股票周四的收盘价为人民币18.20元，跌0.4%，但仍较年初上涨92%。
The Shenzhen-listed stock lost 0.4% Thursday to end at 18.20 yuan, up 92% so far this year.
过去四年房价上涨了35%，不仅抑制了消费需求，也导致许多公司不再招聘人手。
The 35% spiral in home prices nationwide over the past four years has constrained consumer demand, stalling companies from hiring more employees.
即便在周四股价上涨5.2%之前，平安保险的市盈率已是今年预期收益的34倍，账面价值的12倍。
Even before Thursday's 5.2 per cent rise in its stock price, Ping an was trading on 34 times this year's forecast earnings and 12 times book.
此报比雅虎周四收盘价19.18美元高出62个百分点.
The offer represents a 62 percent premium over Yahoo’s closing stock price of $19.18 on Thursday.
预计周三晚上询价，周四开始交易。
The offering is expected to price Wednesday night, with the stock to start trading Thursday.
中粮屯河周四的收盘价为人民币19.36元，约涨2.64元，较年初累计上涨了156%，远远超过上证综合指数同期98%的强劲涨幅。
On Thursday, Cofco Tunhe shares finished at 19.36 yuan, about $2.64, up 156% so far in 2007, handily beating the benchmark Shanghai Composite Index's powerful 98% rise this year.
净石油现价是Correa先生预期达到的欧洲碳排放信用额市场价的四倍多。
The oil’s net present value is over four times greater than the market price of the European carbon credits Mr Correa hoped to obtain.
6月30日发布的最新Case - Shiller指数显示，四月房价继续下跌：十城市指数较一个月前下跌0.7%，二十城市指数下跌了0.6%。
The latest Case-Shiller indices, released on June 30th, showed that prices continued to fall in April: the ten-city index was 0.7% lower than a month earlier, and the 20-city index went down by 0.6%.
这个分子包含四个呈环状排列的碳原子，每两个碳原子之间形成一个三价键。
The molecule contains four carbon atoms arranged in a ring with a triple bond between two of them.
但是他建议人们还是要四处比价，每天看一下价格，因为最好的成交价不是永远都出现在周日或者周二的。
But he recommends people shop around and check prices every day as the best deals may not always be offered on a Sunday or Tuesday.
每个碳原子的价键为四。
每个碳原子的价键为四。
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