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与 yields 相关的网络例句 [注:此内容来源于网络,仅供参考]

Specially made with selected spring tea leaf harvested from aged wild arbor tea trees in Nannuo mountain in Xixuan Pana which yields a light tawny tea liquor with an unique long lasting honey aroma when consumed.

产品说明:选用西双版纳勐海南糯山百年以上树龄乔木茶树早春原料精制而成,汤色透亮,带有南糯山特有蜜香,回味悠长,为龙园号06精品之一。

Such "curve" risk can arise in portfolios in which long and short positions of differ-ent maturities are effectively hedged against a parallel shift in yields but not a-gainst a change in the shape of the yield curve.

这种利率曲线风险将产生在长、短部位到期期限不同的组合中,虽可有效规避殖利率平行移动的风险,但却无法规避殖利率斜率改变的风险。

Given equation (1), then taking the partial derivative yields

由于方程(1),然后到偏导数,得到:"/页"

Water consumption, yields and WUE of summer squash (Cueurbita. pepo) under different water conditions were studied in solar greenhouse.

在日光温室中研究了不同土壤水分条件对西葫芦耗水量、产量及水分利用效率的影响。

Nature constantly yields to man in New York,witness those fragile sidewalk trees gamely struggling against encroaching cement and petrol fumes.

大自然对纽约人总是毫无办法,只能眼看着那些脆弱的人行横道上的树木迎着四面进逼的水泥路面和阵阵袭来的石油烟气拼命挣扎

Nature constantly yields to man in New York: witness those fragile sidewalk trees gamely struggling against encroaching cement and petrol fumes.

大自然对纽约人总是低头服输。只须看看人行道上那些脆弱的树木迎着四面进逼的水泥路面和阵阵袭来的石油烟气拚命挣扎的样子,就足以说明问题了。

Results showed that under the conditions of a reaction temperature of 60 ℃,a reaction time of 6 h and a catalyst consisted of 1.0% BF3-ether and 1.5% AlCl3,the yields of aromatic solvent naphtha and petroleum resin...

结果表明,采用两段聚合法,在催化剂三氟化硼乙醚络合物质量分数1.0%、三氯化铝质量分数1.5%、聚合温度60℃、聚合时间6h的条件下,芳烃溶剂油收率为71.1%,石油树脂收率最高可达20%;同时所得的芳烃溶剂油切割为120号和200号溶剂油,指标达到行业标准。

The optimum conditions were reaction temperature 120°C, reaction time 20h, mole ratio of 5-chloromethyl-2-oxazolidinone and sodium phenolate 1:1. 3,5-Dimethylphenol and epichlorohydrin in sodium hydroxide were condensated to give l,2-epoxy-3-phenoxy propane, then the reation of l,2-epoxy-3-phenoxypropane and the carbamate afforded oxazolidinone in the yields of 69.0%~76.0%. The side reaction had been avoided effectively by the uses of the excessive epichlorohydrin and mixed catalysts.

用3,5-二甲基苯酚和环氧氯丙烷在氢氧化钠存在下缩合生成苯氧基环氧丙烷,然后和氨基甲酸酯反应生成噁唑烷酮,采用过量环氧氯丙烷和使用混合催化剂,有效的避免了副反应的发生,提高了噁唑烷酮的产率,产率69.0%~76.0%。

The optical properties, fluorescence quantum yields and electrochemical properties of these polymers were investigated. It was found that the optical properties of the polymers did not show obvious dependence on the alkyl length on phenylene.

苯环上烷基侧链长度的改变对取代共聚物的光谱、电化学和发光效率等影响很小;而随着苯环上烷氧基侧链长度的增加,聚合物的光谱稳定性逐渐增强,荧光发射光谱中的0-1转变逐渐被抑制,荧光发射半峰宽减小。

Therelationship of the amount of catalyst and the ee% of product was seen to be negative nonlin-ear. Catalyst 3 was used in the enantioselective addition of diethylzinc to aromatic aldehydesand gave good results. The configuration of products was determined by the configuration ofthe catalysts' chiral carbon linked with hydroxy group. Using β- amino alcohols bearing only one chiral center as catalysts for the enantiose-lective addition were studied. D-N, N-dialkyl-2-amino butanol gave poor catalytic effect be-cause of their structure. The configuration of the product is the same as the catalyst. Anotherkind of β- amino alcohols - phenylglycine derivatives and valine derivatives have chiralcenter on the carbon linked with amino group. Catalyzed by-phenylglycine derivatives 6,7, 9, 10, the reactions gave satisfied results. The optical yields exceeded 80%.

在探讨了含有两个手性中心的β-氨基醇之后,选择了只有一个手性中心的β-氨基醇,一是手性中心为连羟基的手性碳原子:D-N,N-二烷基-2-氨基丁醇;二是手性中心为连氨基的手性碳原子:D-苯基甘氨酸衍生物和L-缬氨酸衍生物。D-2-氨基丁醇的催化效果不太好,这与其结构的空间位阻较小有关系,反应产物与连羟基手性碳构型一致;由苯基甘氨酸和缬氨酸出发合成五种β-氨基醇6-10,研究了不同ee%的-6作用下的二乙基锌-苯甲醛加成反应,发现该催化剂具有不对称放大效应;-7,9,lO的催化效果也比较令人满意,光学产率80%以上,所得产物构型与催化剂构型一致。

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推荐网络例句

It's bell can reach over a meter in diameter.

它的身体最大可以达到直径1米多。

Now they are overdue and I shall have to pay a fine.

现在他们过期了,我不得不付罚款。

Therefore the experienced architect and the decorators takes the color person's physics, physiological and the psychological function.

故有经验的建筑师和室内设计师都十分重视色彩对人的物理的、生理的和心理的作用。