查询词典 Zr

Cu6Zr5, the basic cluster of the primary devitrification phase of Cu-based amorphous alloys, is selected as cluster model based the on structure heredity existing between amorphous alloys and primary devitrification phases.

根据非晶与其晶化相存在结构遗传关系，以Cu-Zr基非晶晶化相Cu10Zr7中的Cu6Zr5阿基米德反棱柱为团簇模型，利用离散变分方法从电子层次研究了Al元素对Cu基非晶合金团簇稳定性的影响。

The experimental data of Ga and Zr are reported for the first time.

以上大部分数据和已有的实验数据以及Casnati等人的经验公式的计算结果相符合。

In the end. the application of the Zr-V-Fe getter in the electronic device, vacuum technology and scientific research are introduced.

同时，介绍了锆钒铁吸气剂在电子器件、真空技术和科学研究中的应用。

Especially, IAA contentdecreased obviously within the first 6 days of gynogenesis.

外植体中IAA，iPA、Zr、GA3、GA4含量均较低，尤其是IAA含量明显下降。

The present state of artificial joint material research and joint market demand were described.The development of the β titanium alloys with high strength,plasticity and low Young′s modulus has become the focus of artificial joint material.

讲述了目前人工关节的市场需求情况及人工关节材料的研究现状，提出开发强度高、塑性好、弹性模量低的β型钛合金成为各国研究的重点，同时开发出了具有自主知识产权的近β型钛合金TLM(Ti-Zr-Sn-Mo-Nb)。

The characters of geochemistry are rich alkali. And at the same time the content of calcium is high. They are rich in alkali, high in Potassium, enriched in LILE, LREE and Pb, depleted in HFSE and have a small Sr, Nd, Pb isotope range. Their source is probably a kind of even metasomatic mantle. This is consistent with the fact that there is kimberlite containing flogopite in the deep-source enclosure of Cenozoic super-K alkali lava in the southern part of this rock zone.

组成这些钾质碱性岩带的岩石：在岩相上，包括深成相、浅成相和喷溢相等不同岩相；在岩性上，从超基性、基性、中性到酸性岩石；造岩矿物，从超基性到酸性岩石中均有透辉石，在基性、超基性岩中有霞石；在岩石化学成分上，所有岩石均表现出富碱高钾富钙，微量元素富集Rb、Sr、Ba等大离子亲石元素和Th、U等放射性元素，贫Nb、Ta、Zr、Hf等高场强元素；稀土元素富集轻稀土，铕负异常不明显；Sr、Nd、Pb同位素组成，显示了物质来源于富集地幔源区。

Zr has harmful effect on the thermal fatigue property because it promotes the appearance of microporosity and formation of eutectic.

本文尝试研究微量元素对K17G合金的作用机理，并通过合理地控制和调整微量元素含量，在保持K17G合金原有良好力学性能的基础上，提高K17G合金的初熔温度和热疲劳性能，开发出新合金，以满足未来发动机不断改进的需要。

Research works of this thesis aims at the light magnesium lithium alloys and mainly focuses on the effects of the misch metal and some thermal treatments such as the homogenizing treatment 、 the hydrogenating treatment etc.

本论文以轻质镁锂合金材料为研究对象，以均化处理、氢化处理等热处理手段和混合稀土对Mg-Li-Zn-Zr系镁合金的显微组织和机械性能影响为主要研究内容，以具有代表性的Mg-7。

The transformation temperature from low resistance phase to high resistance phase is above 800℃, which is 100℃ higher than that of NiSi.

NiSi的薄层电阻由低阻转变为高阻的温度在800℃以上，比没有掺Zr的镍硅化物的转变温度上限提高了100℃。

Based on the traits of dyadic wavelet decomposition of signal and that of the distribution of wavelet image coefficients, PLVQ and ZR are conjoined by making use of D\-4 lattice. Firstly, Pyramidal lattice vector quantization is adopted to quantize wavelet image coefficients. Nonzero lattice vectors and zero lattice vectors are formed. Secondly, nonzero lattice vectors are dealt with by adopting complex entropy coding. Finally, in order to fix on the position of nonzero lattice vector effectively, that is, to deal with zero lattice vectors effectively, the concept of significant map is introduced into. The significant map is scanned two times from down to up and from up to down.

根据信号的二进小波分解特点和小波图象系数的分布特点，利用D\-4格将PLVQ和零树结合起来，提出了一种基于零树和金字塔格型矢量量化的小波图象编码方法，该方法首先采用金字塔格型矢量方法来量化小波图象系数，以得到非零格点和零格点；然后采用复合熵编码来处理非零格点；最后为了有效确定非零格点的位置，也就是为了有效地处理零格点，又引进了重要图的概念。

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。