查询词典 Nd

OGa. The 1863士44Ma U-Pb age of migmatite and 2071士48 Sm-Nd iso- chron age of amphibolite in Sanzhishu demonstrate that at least part of the "Hexi" Group is of Early Proterozoic rather than Late Paleozoic.

三枝树地区"鹤溪群"中混合岩年龄为1863±44Ma，斜长角闪岩全岩矿物Sm－Nd等时线年龄为2071±48Ma，表明景宁三枝树地区变质岩的时代应为早元古代，并非原来所属"鹤溪群"划归的晚古生代，这套变质岩可能是浙闽变质基底的一部分。

In such partial melting reactions, accessory phases that concentrated LREE like monazite occurred as residue phases, which resulted in extremely low LREE and P-2O-5 contents and elevated Sm/Nd ratios in the melts.

在部分熔融过程中，诸如独居石这样的富含轻稀土元素的副矿物以残留体的形式出现，不参与部分熔融，导致BH-2-3具有很低的LREE和P2O5含量及高达0.4122的Sm／Nd比值。

The composi tional change profiles of monazite demonstrate a heterogeneous distribution of e lements La, Ce, Nd, P, Th, Si, Ca and U. This was caused by the differences in geological environments, temperatures, pressures and compositions of the hy drothermal solutions.

根据微区剖面(0.18mm)元素分布曲线，指出了La、Ce、Nd、P、Th、Si、Ca和U等元素表现出8～10个微环带成分不均匀分布的特点，并认为成矿溶液的地质环境、温压和微量元素含量变化是不均匀分布的主要原因。

Objective To analyse the clinical effect of Q-switched Nd:YAG Laser therapy for case with nevus of Ota.

目的：观察Q开关Nd：YAG激光系统治疗太田痣的疗效和安全性。

Objective To appraise the treatment result of nevus pigmentosus by CO2 laser combined with Nd: YAG laser.

目的：评价CO2激光结合Nd：YAG激光治疗色素痣的疗效。

In addition, influence of nitrogen on TD and ND are also investigated.

另外，本文也研究了氮对TD和ND的影响，取得了一些与前人不同的结果。

We think that the Nd:YAG laser is an important,effective therapeutic method for treatment of posterior capsular opacification.

Nd：YAG激光是后囊混浊有效、方便、合理的重要治疗方法。

AIM: To assess the efficacy and safety of Q-switch Nd:YAG laser posterior capsulotomy in treatment of posterior capsular opacification.

目的：探讨Q开关Nd：YAG激光后囊膜切开术治疗后囊膜混浊的疗效及安全性。

The conventional 40Ar/39Ar age of muscovite in high-pressure metamorphic orthogneiss, surrounding rocks of the Qinglongshan eclogite, is identical with its Rb-Sr and Sm-Nd ages.

作为东海青龙山榴辉岩围岩的高压变质的正片麻岩，其白云母的常规~(40)Ar/~(39)Ar年龄和Rb-Sr、Sm-Nd年龄一致，激光微区Ar同位素分析表明，白云母的Ar同位素分布也是均匀的。

This article researched the output characteristic of impulse Nd:YAG laser in JSY-01 type.

主要研究了JSY-01型脉冲Nd：YAG激光的输出特性。

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。