查询词典 Nd

Based on the discrimination of the previous data, thirteen granites plutons are selected to be dated by high precision single grain zircon U-Pb method and one pluton is selected to be dated by Rb-Sr and Sm-Nd internal rock-mineral isochron.

本文在充分了解和掌握前人资料和研究成果的基础上，挑选了13个花岗岩体进行了详细的单颗粒锆石U-Pb定年，一个岩体进行了全岩—矿物Rb-Sr和全岩—矿物Sm-Nd内部等时线定年。

Eclogites north of the fault give similar Sm–Nd isochron ages (131–126 Ma) but otherwise differ in that they are strongly overprinted by a lower pressure assemblage and, along with associated HP/LT rocks, give much younger 40Ar/39Ar ages of 88–55 Ma indicating a later amphibolite facies metamorphic event.

榴辉岩断层以北的始可予以实现位置相似的Sm - Nd同位素年龄（131-126 Ma）的方式不同，但他们强烈较低的压力叠加和组合，以及相关的惠普/审裁处的岩石，让更年轻的40Ar/39Ar年龄在88-55马说明后来角闪岩相变质事件。

The Baoyintu group may be divided into five lithologic members based on the chemical composition and the formation sequence, and the age of the formation is 2485±128Ma by Sm-Nd isochron dating in plagioclase amphibolite in the oldest lithologic member.

在野外地质填图的基础上，将宝音图群按照内部的物质成分差异和地层形成年代先后顺序，将宝音图群划分为五个段，其中最早形成的第一岩性段中斜长角闪岩中Sm-Nd全岩等时线年龄为2485±128Ma，可代表宝音图群的形成年龄。

Eclogites north of the fault give similar Sm–Nd isochron ages (131–126 Ma) but otherwise differ in that they are strongly overprinted by a lower pressure assemblage and, along with associated HP/LT rocks, give much younger 40Ar/39Ar ages of 88–55 Ma indicating a later amphibolite facies metamorphic event.

榴辉岩断层以北的始可予以实现位置相似的Sm - Nd同位素年龄（131-126 Ma）的方式不同，但他们强烈较低的压力叠加和组合，以及相关的惠普/审裁处的岩石，让更年轻的40Ar/39Ar年龄在88-55马说明后来角闪岩相

Objective To evaluate the therapeutic effect of transmyocardial laser revascularization induced by Nd:YAG laser for the experimental acute myocardial infarct in dogs using myocardial image tomograph.

目的 采用心肌灌注显像等方法评价Nd：YAG激光心肌血运重建术治疗实验性急性心肌梗死的作用。

Objective To evaluate the therapeutic effect of transmyocardial laser revascularization induced by Nd:YAG laser for the experimental acute myocardial infarct in dogs using myocardial image tomograph.

Nd：YAG激光心肌血运重建术的实验研究和临床报道不断增多〔'4，但对TMLR的远期疗效及评价标准仍有争议。

Usually, concentration of fission product monitors ~(137)Cs and ~(148)Nd are measured experimentally, from which burnup of irradiation fuel element can be derived.

通过实验测得反应堆停堆时刻裂变产物~(137)CS、~(148)Nd等监测体的浓度值，进而推算出辐照燃料元件的燃耗值是通常采用的方法。

Methods Firstly, use CO2 laser with continuous pulse and low power burn the skin injure to level of normal skin, secondly, irradiate the skin injure with Nd: YAG laser to treatment the face nevus pigmentosus 128 case,768 skin injures.

先用CO2激光选择连续脉冲，小功率输出，烧灼皮损到周围正常皮肤水平，继之用Nd：YAG激光治疗，治疗面部色素痣128例、768个皮损。

We gained 3.3W green laser when we pumped the system at 25W power while the temperature of Nd: YVO4 was controlled at 22℃, LBO was at 18℃, the efficiency of light-light reached 14.3%, and the conclusion nearly come to the same thing with the theory, this result is better than the need to gain 3W green laser of industrialization, and surpasses it 10 percentage.

使Nd∶YVO_4晶体的温度控制在22℃、LBO的温度控制在18℃，整个系统在泵浦光功率为25W的情况下，获得了3.3W的绿光输出，光-光转换效率为14.3％，实验结果与理论预期基本相符，比产业化项目的目标要求—绿光输出3W高出10个百分点。

For Southwestern Margin of Aqikekule Lake ophiolite, their field geological, petrological, minerological, petrochemical and geochemical characteristics show that:① it outcropped as tectonic slices along the near west-to-east strike Kunzhong fault and is composed of metamorphic perodotties, cumulates and volcanic rocks, in which, chromites are distributed in the upper part of metamorphic peridotites as pods, or in the lower part of cumulates as near-strata;② metamorphic peridotites include serpentinites, chromite-bearing serpentinites, chlorite-epidote schists and chromitites, of which, chromitites have nodular and orbicular structure, and cumulates include pyroxenits, serpentinites, chromite-bearing serpentinites, chromites and metamorphically mafic rocks and only basalts are seen in volcanic rocks;③ Cr# of chromites suggest that they formed in the SSZ and Al〓O〓 and TiO〓 of metamorphic peridotites also suggest SSZ environment;④ metamorphic peridotites have V type and enriched LREE patterns, cumulates have from strongly depleted LREE, flat REE to enriched LREE patterns with universally striking positive Eu anomalies and basalts show flat REE or slight enriched LREE patterns with no Eu anomalies;⑤ trace element and Sm-Nd isotope characteristics of metamorphic peridotites imply their strikingly heterogeneous mantle character ε〓(t+4.39～+26.20 and later Nb, Ta fertilization;⑥ trace element characteristics of basalts and their tectonic diagrams show they probably formed in the rifted island arc or back-arc basin environment.

对阿其克库勒湖西南缘蛇绿岩，野外地质、岩石学、矿物学、岩石化学以及地球化学等特征表明：①该蛇绿岩以近东西向、沿昆中断裂呈构造岩片出露，由变质橄榄岩、堆晶岩和火山岩三个单元组成，其中见铬铁岩呈豆荚状产于变质橄榄岩的上部，或呈似层状产于堆晶岩的下部；②变质橄榄岩包括蛇纹岩、含铬铁矿蛇纹岩、绿帘绿泥片岩和铬铁岩等类型，其中，豆荚状铬铁矿具有结核状构造和球状构造，堆晶岩包括辉石岩、蛇纹岩、含铬铁矿蛇纹岩、铬铁岩和变质基性岩等类型，火山岩仅见玄武岩；③铬铁矿的Cr#表明其形成在俯冲带，变质橄榄岩的Al〓O〓和TiO〓成分也指示了SSZ环境；④变质橄榄岩的稀土配分型式见V型和LREE富集型两种型式，堆晶岩表现出从LREE强烈亏损、REE平坦分布到LREE富集的配分特征，并且普遍具有醒目的正Eu异常，玄武岩的稀土配分型式表现为平坦型或LREE略富集，无Eu异常；⑤变质橄榄岩的微量元素及Sm-Nd同位素特征指示了其地幔的显著不均一性ε〓(t为+4.39～+26.20以及Nb、Ta在后期的富集；⑥玄武岩的微量元素特征及构造图解表明其可能形成在裂谷岛弧或不成熟的弧后盆地环境。

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。