查询词典 Nd

Then Rb and Sr are separated and purified by using a mixed eluent of pyridinium and DCTA complex.

本实验室在此基础上建立了一种新的Rb-Sr，Sm-Nd化学分离方法，以用于地质样品的同位素测试。

Output experiment of pyrotechnically pumped Nd glass laser .

烟火泵浦钕玻璃激光器出光实验研究。

O verall f rame a nd c alculation p rocedure o f vulnerability assessment and a demonstration with the little power system about two main modules have provided in the paper.

文中给出了脆弱性分析的总体思路和计算流程，并对其中两个主要模块用小系统进行了示例。

We can infer from it that the man sets these many clocks just to remi nd himself that he should never give up.

我们可以从这幅图中推断出，这个人摆了这么多闹钟就是为了提醒自己不要轻易地放弃。

The influences of conditions, such as the different elements in A site, reaction temperature and the reoxidation time etc.on partial catalytic oxidation of AFeO 3 catalyst are reviewed. The results show that the lattice oxygen from AFeO 3 pervoskite catalyst in A site occupied ...

结果表明，稀土金属(La ，Nd ，Sm ，Eu)占据A位的AFeO3钙钛矿型催化剂中的晶格氧适于甲烷选择性氧化制合成气，在完全氧化的LaFeO3催化剂上存在少量的强氧化性氧物种，通过控制再氧化条件，可使CH4 在LaFeO3催化剂的作用下，高转化率(～ 92 %)、高选择性(96 %)地生成合成气。

Mast cells w ere isolated and purif ied from human embryo oral mucosa and were co-cultured with the fibrobl asts from human embryo oral mucosa.The rough endoplasmic reticula a nd mitchondria of OMFb were observed and analyzed.

采用分离纯化人胚口腔粘膜肥大细胞的介质溶液与体外培养的人胚口腔粘膜成纤维细胞共同培养，对OMFb进行形态计量分析。

But for The Tem, frnticlly trying to retin sense of urgency, trying to influence policy mkers nd mjor medi outlets, drstic mesures were needed.

但是对于车队，疯狂地试图保持一种紧迫感，试图影响决策者和主要媒体，采取严厉的措施是必要的。

The metal elements of the volcanic-hosted massive sulfide deposit have two sources, the copper and zinc are derived from rhyolitic magmas whereas the lead are probably related to old sediments overlying the rhyolites.(4) It is suggested here that the volcanic rocks hosting massive sulfide deposit in the north Qilian orogen, which are previously considered as a bimodal suite of Neo-proterozoic to middle Cambrian age in a continental rift, are virtually related to subduction magmatism in Ordovician age, and there might have no continental rift magmatism of Neo-proterozoic to middle Cambrian in the north Qilian.

Th/Ta比高(5.0～11.7)，εNd为较大的负值(-2.6～-8.4)，流纹岩的形成可能是两个端元组分混合的过程、或是上地壳混染的结果，形成在活动陆缘环境；(3)北祁连块状硫化物矿床成矿金属物质具有两种来源，Cu、Zn等来源于流纹岩，而Pb的来源可能与古老沉积物有关；(4)本文认为，前人厘定的北祁连新元古代-中寒武纪赋存块状硫化物矿床的大陆裂谷双峰式火山岩应是与俯冲作用有关的奥陶纪火山岩，说明北祁连可能不存在新元古代-中寒武纪的大陆裂谷活动。

Designing o f t he p ower c ircuit, c ontrol circuit, d riving c ircuit a nd protect circuit is discussed in this paper.

文中对所提出的电源的主电路、控制电路、驱动电路和保护电路进行了研究和设计。

Two Rugate filters for compensating gain narrowing are designed separately based on the gain characteristics of Ti: sapphire amplifier and Nd: glass amplifier. The Gauss spectral shaping function is selected as the compensation modulation function.

采用Rugate膜系理论，分别根据钛宝石和钕玻璃介质增益窄化的特点，合理选择补偿增益窄化的调制函数，优化设计出了分别用于补偿钛宝石系统和钕玻璃系统增益窄化效应的Rugate滤波器。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。