查询词典 EU

With the Eu doping level increased to more than 1mol%, the content of B-site occupancies is increased and acceptor doping is to be dominant.

当Eu含量低于1mol％时，Eu在PZT晶格中主要占A位，起施主掺杂作用；随着Eu含量的增加，其在PZT晶格中占据B位的比例逐渐增多，受主掺杂作用逐渐增强。

It was shown that the improvement of electric properties in 1%Eu-PZT can be attributed to Eu donor doping, which decreases the concentration of defects such as oxygen vacancies and holes, while the degradation in fatigue and leakage current properties shown in the films with more than 1mol% Eu dopant results from the apparently dominant acceptor doping, which increases the concentration of oxygen vacancies and holes.

结果表明，1mol％Eu施主掺杂，可以减少氧空位以及空穴等缺陷浓度，因此1％Eu-PZT薄膜的极化疲劳和漏电流特性得到明显改善；高于1mol％Eu的受主掺杂作用使薄膜中氧空位以及空穴等缺陷浓度增加，导致PZT薄膜电学性能恶化。

This indicates the volcanic rocks with the character of autunite alkalescence siries, LREE/HREE=4.31-14.60, with a mean value of 8.74,=3.72-16.16, with a mean value of 9.59, enrichment of LREE,δEu=0.61-1.11, with a mean value of 0.80, majority samples δEu.0, indicate Eu pronounced weak negative abnormalty or no pronounced Eu abnormally.

LREE/HREE=4.31~14.60，平均8.74，=3.72~16.16，平均9.59，具有LREE富集的特征，δEu=0.61~1.11，平均0.80，多数样品δEu.0，表明铕呈弱负异常或不显异常。

The Chondrite normalized REE pattern shows typical enrichment of LREE, with ∑REE peaking up to 318 mg kg^(-1) in central layer of the profile. Both Ce and Eu have a similar trend of variation in the profile, i.e. positive anomaly-negative anomaly-positive anomaly from bottom to top. The highest ∑REE value occurs where negative Ce and Eu anomaly and relatively higher Fe(superscript 2+)/Fe(superscript 3+) values also occur.

剖面稀土元素分布型式为轻稀土富集型，∑REE在风化壳中部达到最高值318 mg kg^(-1)，剖面上Ce和Eu均呈正异常－负异常－正异常变化趋势，∑REE最高值出现在Ce和Eu负异常和Fe(上标 2+/Fe(上标 3+)较高层位，∑REE与Fe2O3显著正相关。

Furthermore, the structures of the complexes are strange. The tripodal ligand H〓L〓 form a 2: 2 ring-like binuclear complexes [Eu〓·L〓·6DMF] ·CH〓OH·DMF with Eu〓 in DMF. Two DMF molecules are accommodated in the ring and coordinate with Eu〓.

此外配合物的结构还比较特殊，三足配体H〓L〓与铕的配合物在配位能力较强的溶剂DMF中形成环状的2：2型双核配合物[Eu〓。L〓·6DMF]·CH〓OH·DMF，环状空腔刚好能够把两个配位的DMF溶剂分子包在里面。

It was shown that 1%Eu-PZT films have the highest Rayleigh constant, which indicates the minimal interaction of defect-domain walls and high contributions to dielectric and polarization. The high mobility of domain walls, combined with the obvious improved crystallization of 1%Eu-PZT results in the increase of dielectric constant and remanent polarization.

结果表明，1％Eu-PZT薄膜的瑞利系数最大，缺陷与畴壁之间的相互作用最小，畴壁运动对介电常数和极化强度的贡献最大，加之薄膜明显改善的结晶特性，使1％Eu-PZT呈现较高的介电常数和剩余极化强度。

A statistics in world range indicates that the Sr/Eu ratios in the peraluminous granites show similar variation trend to those in pegmatitic apatites. This paper suggests that the high Sr/Eu ratio (＞300) in apatites or peraluminous granites is due to the strong partition of Eu〓 into the aqueous fluid, and this ratio can be used as an excellent geochemical indicator of fluid exsolution from magmatic melts.

对世界范围内的过铝质花岗岩统计表明，过铝质岩浆岩的全岩样品中的Sr/Eu也呈现二歧变化，由此本文提出Sr/Eu比值是指示过铝质岩浆体系中岩浆流体相出溶的有效地球化学参数，大于300的Sr/Eu比值是Eu〓强烈分配进入流体相的地球化学标志。

The coordination geometry of the Eu atom is best described as a strongly distorted square-antipyrism.. The two Eu atoms are bridged by two N-oxide oxygen atoms forming a dimeric unit with crystallographic inversions centre. The Eu……Eu distance is 4.2137(9)〓. The two europium atoms and two bridging oxygen atoms is coplanar. The angles of Eu(1)-O(7)-Eu(1A) and O(7)-Eu(1)-O(7A) are 117.82(14)° and 62.18(14)°, respectively. 15 is the first dinuclear triboluminescent lanthanide complex reported.

同时还测定了其摩擦发光光谱与其光致发光光谱，并讨论了晶体结构和摩擦发光活性之间的关系。X-射线结构分析表明，15为有对称中心结构的配合物，每个Eu与三个HTTA的六个O原子和两个PyO的两个O原子形成八配位的四方反锥几何构型，2个N-Oxide O原子桥联两个Eu，形成了一个双核配合物，Eu。。。。

The results of XPS about the boron-rich rare-earth borides synthesized by themethod mentioned above show that the valence of La is +3, and the valence of Smand Eu is a fluctuation system in which the average valence is about 2.6 for Smand 2.4 for Eu.

对〓(x=0.1，0.3，0.5，0.7，0.9)及〓(x=0.1，0.3，0.5，0.7，0.9)两个系列富硼双稀土硼化物的XPS研究表明：在这两个系列硼化物中La的价态均为+3价Sm的价态不随Sm含量的变化而变化，而Eu的价态随着Eu含量的变化而变化，随着Eu的含量的增加，Eu的价态逐步升高，当x=0.5时达到一极大值，然后随着Eu含量的增加Eu的价态逐步降低。

When energy transfer systems were obtained from the interaction of G1.0, G1.0, G and G2.0 with eosin or Eu~(3+) ion respectively, all the dendrons could partially transfer their absorbed energy to eosin and Eu~(3+) ion at a certain range of concentrations.

将G1.0、G1.0、G(来源：c2ABC论文网www.abclunwen.com)、G2.0分别与曙红或Eu~(3+)离子构成能量转移体系，发现在一定的浓度范围内，这些树枝块均可以将吸收的能量转移给曙红和Eu~(3+)离子，使曙红和Eu~(3+)离子的特征发射强度增强，曙红的荧光强度最大增强为原来的2.5倍；Eu~(3+)离子的荧光强度最大增强为原来的11.7倍。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。