查询词典 DY

This article discribes the laboratory study of amplifying test of sensitivity and reliability to DY-1 total clones detecter and DY-2 Coli. groups detecter with national standard method.

本文报告应用国家标准方法对DY-1型菌落总数快速检测器及DY-2型大肠菌群快速检测器的敏感性和可靠性进行扩大验证的实验研究。

The type of magnetic phase transition in Dy(subscript 1-xGd Co2 compounds is found shifting from first order to second order as Dy is substituted by Gd, which is supposed to be the main reason for the detraction of MEC.

磁熵变下降的主要原因是Gd替代Dy后化合物的磁相变由一级相变转变为二级相变。

The reducing-coupling reaction of benzoyl chloride under Dy/n-BuBr was complex. Besides diphenyl diketone, benzoin and ring-opening product of THF were also obtained.

苯甲酰氯在Dy/n-BuBr作用下的还原偶联反应较为复杂，除得到二苯基乙二酮外，还得到四氢呋喃开环产物以及安息香。

This is Mr. Zhou from DY Company.

我是DY公司的周先生。

The properties of the Yb〓 and Dy〓, which has important value on researching and application, are studied by measuring the absorption and emission spectrum.

然后通过测得的掺Dy〓和Yb〓的氟锆酸盐玻璃的吸收和发射光谱，对具有重要研究和应用价值的稀土离子Yb〓和Dy〓进行了研究。

Influence of Microwave on Phase Structures of SrAl_2O_4:Eu~(2+),Dy~(3+) and on Valence of Europium

微波合成对SrAl_2O_4：Eu~(2+)，Dy~(3+)晶相和铕的价态的影响

The results indicate that both the precipitates produced by Leptospirillum ferriphium strain DY and Acidirhiobacillus ferrooxidans strain GF are composed of jarosite and ammonium jarosite. However, the content of jarosite in the precipitates synthesized by strain GF is 5.53% higher than that synthesized by strain DY, but the content of ammonium jarosite in the precipitates synthesized by strain DY is 15.24% higher than that synthesized by strain GF.

结果表明：无论是嗜铁钩端螺旋菌DY菌株，还是嗜酸氧化亚铁硫杆菌GF菌株合成的沉淀都是黄钾铁矾和黄铵铁矾的混合物；其中，GF合成的沉淀混合物中黄钾铁矾的含量比DY合成的黄钾铁矾约高出5.53%；而DY合成的沉淀中，黄铵铁矾的含量比GF合成的沉淀中的黄铵铁矾的含量约高出15.24%。

The results show that the grain size is refined by the addition of Nd or Dy, especially combined addition is better than single addition.

结果表明：ZK10镁合金中分别加入Nd和Dy均能细化晶粒，且Nd和Dy同时加入的效果优于单一加入的效果，当同时加入质量分数为0.2% Nd和0.6% Dy时，合金的平均晶粒尺寸由原来的150 μm细化至60 μm，使ZK10合金的抗拉强度和屈服强度分别提高至191.0 MPa和69.0 MPa，伸长率达到16.6%，与未加入稀土的ZK10合金相比分别提高89%，43%和232%。

The results show that the grain size is refined by the addition of Nd or Dy, especially combined addition is better than single addition. With the addition of 0.2 % Nd and 0.6% Dy, the grain size is reduced from 150 μm to 60 μm. Combined addition with two rare earths elements makes the tensile strength, yield strength and elongation of ZK10 alloy increase to 191.0 MPa, 69.0 MPa, and 16.6%, increasing by 89%, 43%, 232% respectively, compared with ZK10 alloy without RE element.

结果表明：ZK10镁合金中分别加入Nd和Dy均能细化晶粒，且Nd和Dy同时加入的效果优于单一加入的效果，当同时加入质量分数为0.2% Nd和0.6% Dy时，合金的平均晶粒尺寸由原来的150 μm细化至60 μm，使ZK10合金的抗拉强度和屈服强度分别提高至191.0 MPa和69.0 MPa，伸长率达到16.6%，与未加入稀土的ZK10合金相比分别提高89%，43%和232%。

Firstly, the reaction thermodynamics was analyzed. Then, the reaction mechanism was studied, and the results are as following:① Ca moves to the surface of Dy〓O〓 by vapor phase;② Dy〓O〓 reduced to Dy by Ca is fast;③ Dy moves to the Fe surface mainly by vapor and various Dy-Fe alloys are produced gradually;④ The forming process of DyFe〓 may be described by Contracting Core Model;⑤ The rate-controlling step of the reaction is the Dy diffusing toward contracted and nonreaction nuclear center Fe.

首先考察反应的热力学可能性；其次探讨反应机理；通过实验确定：①Ca主要以气态形式迁移到Dy〓O〓表面参与反应；②Dy〓O〓被Ca还原为Dy的速度很快；③Dy主要以气态形式迁移到Fe表面逐级生成Dy-Fe合金；④DyFe〓的形成过程可以应用收缩核模型来描述；⑤Dy通过DyFe〓产物层向缩小的未反应核中心Fe的扩散是反应的控速步骤，通过动力学计算确定：还原扩散反应的表观活化能E〓=45kJ/mol。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失