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The paleochemical characteristics of paleoseawater from the Early Ordovician of Yangtze Craton are reconstructed through contrastive research of REE and trace element composition, Ce anomalies and Sm/Nd ratio of conodonts.

利用激光剥蚀电感耦合等离子质谱对扬子克拉通宜昌三峡地区早奥陶世不同时期海相碳酸盐岩地层中的牙形石个体进行了原位分析，并与已发表的世界其他地区古海水的稀土元素组成进行了比较，利用REE和微量元素组成、δCe和Sm/Nd比值等地球化学指标恢复了该时期古海水的地球化学性质。

The fluorescence spectra of Eu~(3+) may be used to study the structure ofcompounds.The band shift of Nd~(3+) in its absorption spectra,the red-to-orangeintensity ratio of the Eu~(3+) emission(~5D_0→~7F_2)/(~5D_0→~7F_1)and the yellow-to-blue intensity ratio of the Dy~(3+) emission~4F_(9/2→~6H_(13/2)/~4F(9/2→~6H(15/2)intheir fluorescence spectra may be used to study the degree of covalency of theLn-O bond and its relation with the electronegativity of M in Ln-O-M.

本文介绍了利用 Eu~(3+)的荧光光谱研究化合物的结构；利用 Nd~(3+)的吸收光谱的谱带位移和 Eu~(3+)的荧光光谱的红橙发射强度比(~5D_0→~7F_2)/(~5D_0→~7F_1)和 Dy~(3+)的黄兰比~4F_(9/2→~6H_(13/2)/~4F_(9/2→~6H_(15/2)，了解Ln—O—M中 Ln—O 化学键的共价程度以及 M 的电负性对共价程度的关系；利用吸收光谱、荧光光谱和磁化率研究稀土的价态以及利用磁化率研究化合物的组成。

Methods: the chondrocytes of the rabbit condylar were derived from rabbit,and were cultured to the second generation in vitro,then hgfcdna transfected the cells.the capacity of cell proliferation was tested by mtt,the deferences of the type ii collagen were tested by sabc immunohistochemical of the type ii collagen after infected;the mrna levels were tested nd so on the mrna levels were tested by in situ hybridization of the type ii collagen between the transfection group and comparison group .

取兔膝关节软骨细胞体外培养至第二代，hgfcdna转染软骨细胞，空白质粒组为对照组；噻唑蓝检测软骨细胞的增殖能力，sabc免疫组化及原位杂交法测其ii型胶原在转染前后的变化与mrna的表达。

To achieve this goal,ethnic education must combine objective reality a nd general demands of modern education with subjective desires and special deman ds of ethnic students.

为取得这样的教育预期，民族教育必须将现代教育的客观和一般要求与民族对象的主观和特殊需要协调起来。

The root mean square error was found to be 14 cm\+\{-1\} for urea. The assignment of the fundamentals for CO(NH\-2)\-2 and its deuterated isotopomer CO(ND\-2)\-2 were also performed according to the potential energy distributions.

尿素分子的振动光谱研究 [2～ 6] 对探讨该分子的振动电子耦合、激发态光谱和共振拉曼光谱及其在生物学、药物学和材料科学领域的应用有着重要的意义。

A home made laser diode was used to end pump a piece of 1.0 mm long Nd:YVO4 crystal dopped with 1.0%.

用国产的激光二极管端面泵浦厚2.0 mm、掺杂浓度1.0%的Nd：YVO4激光晶体，在注入泵浦光功率为8 W时，用5 mm长的I类临界位相匹配BIBO晶体获得的TEM00模蓝光输出达1.83 W。

Mechanical transmision devices of any control system have some elastics This Ki- nd of mechanical resonant frequency produced by the elasticity is usually higher and it's far away from the mediumfrequency domain sensitive to dynamic characteristics, so the resonant effecr on the system can be neglected.

任何控制系统的机械传动装置都有一定弹性。通常，这种弹性形变所产生的机械谐振频率&较高&，远离对系统动态品质敏感的中频段，谐振对系统的影响可以忽略。

Sm and Nd are separated and purified by using HIBA as an eluent through a very small volume of cation-exchange resin

该方法选用AG50W×8阳离子交换树脂，并先后采用不同的淋洗剂进行分离提纯。

A loop not is a good choice if you a re using two str a nds of floss (which you do in most cross stitch) or when your design c a lls for just a few stitches like a flower, st a r, eye, etc. Fold your thre a ds in h a lf a nd insert the cut ends in the eye of this needle, le a ving a loop a t the bottom or t a il.

不是一个循环是一个很好的选择，如果您正在使用牙线的两个链，或在您的设计要求只是像花一样，明星，眼睛，等你的线程折一半，并加入一些切缝733297本针眼，留在底部或尾巴一个循环。

W h e th er a plan et can sup p o rt life de p e nd s on th e size and br i gh t ness o f its star, th at i s its 'sun'.

是否一行星能维持生命取决于那大小和亮度的它的恒星，那是它的&太阳&。

Summary In copyright infringement cases,if the alleged infringer uses or even plagiarizes the copyrighted works or parts thereof,which causes no substantially adverse effect on the normal exploitation of the work,nor does it inflict any substantial damages to the right owner,the de minis doctrine should be applied to exempt the liabilities of the defendant and seek the balance of interests between the right owner and the general public embodied by the copyright law.

在侵犯著作权案件中，如果被控侵权行为人虽未经著作权人的同意，使用甚至抄袭了受著作权保护的作品或作品的片段，但若情节轻微，未对该作品的正常使用产生任何实质不利的影响，亦未对权利人的权利造成实质性的损害，则应适用&不计琐细原则&，免除行为人的责任，以寻求在权利人利益与著作权法所体现的社会公共利益之间的平衡。

This new product will become our best seller.

这个新产品会成为我们最畅销的产品。