查询词典 decagonal

High density stacking faults are induced into Al-Co-Ni decagonal quasicrystal by using high temperature deformation. It is found that their fault planes are perpendicular to the ten-fold axis and their displacement vectors R are lying in the fault planes and parallel to a two-fold axis A2D.

通过高温形变的手段在Al-Co-Ni十次准晶中引入了高密度的层错，并发现这些层错的层错面与十次轴垂直，层错的滑移矢量R在层错面内并与二次轴A2D平行。

Based on the classical nucleation theory and the time-dependent nucleation theory, the thermodynamics and the kinetics for the nucleation of decagonal quasicrystal have been discussed in det...

大量实验结果表明，惰性形核涂层的非晶化程度、熔体过热度、过热保温时间以及循环过热次数等工艺参数将显著影响熔体的初始过冷度。

At last, the growth mechanism selection of the decagonal quasicrystal was also achieved by means of changing the structure of the nucleation substrate, which provides the direct experimental evidence for the theoretical research of quasicrystal.

且当熔体过冷度大于临界值时，单相准晶生长将发生从侧向生长向连续生长的粗糙化转变，最后通过改变触发形核衬底结构类型实现了连续和侧向两种生长机制的自由选择。

The decagonal quasicrystal is a two dimentional one and periodic in the third which is parallel to the tenfold axis.

衍射斑点明锐且呈准周期排列，同时具有长程有序，人们称这种新相为准晶。

It is clearly shown that the Al-Ni-Rh decagonal quasicrystal with 1.6 nm periodicity contains a kind of atom columnar cluster with about 1.6 nm periodicity as the most fundamental structural building block.

主要的研究结果可以总结如下：1利用高分辨电子显微技术在Al_(75)Ni_(15)Rh_(10)合金中发现了1.6 nm周期的十次准晶，报道了这种准晶在二次轴方向及在十次轴方向的高分辨结构，阐述了其周期及其准周期的排列方式。

Single Al-Ni-Co decagonal quasicrystal particles were prepared by the combination use of conventional casting and ball milling. The coated Al-Ni-Co quasicrystalline particles were prepared by sol-gel processing.

采用常规铸造法和球磨法制备得到单相Al-Ni-Co十次准晶颗粒，并采用溶胶－凝胶法在准晶颗粒表面成功的添加了涂层。

Two kinds of stable decagonal quasicrystals and 16 approximants have been found in Al-Cr- alloys by means of selected-area electron diffraction, high resolution electron microscopy image and X-ray single crystalline diffraction.

用选区电子衍射和高分辨像等手段，确定了Al-Cr-合金系中的16个准晶近似相，其中的7个准晶近似相为新相，它们是：六方τ相，六方μ′相和正交ε相，以及周期为3.72nm的正交(2/1，2/1)，(1/1，3/2)，(2/1，3/2)相和α=2.29nm，c=3.71nm，β=108°的单斜相。

The main conclusions obtained from the present study are summarized as following:1 An Al-Ni-Rh decagonal quasicrystal with 1.6 nm periodicity, which can be formed as main phase in the rapidly solidified Al75Ni15Rh10 alloy was found and its quasiperiodic and periodic features viewed respectively along the five- and two-fold axes were revealed by HREM.

利用能量计算、高分辨观察像以及高分辨像模拟计算结合的方法确定了复杂结构合金相ξ\'-和ξ-Al-Ni-Rh中缺陷的结构，并且讨论了电子束对复杂合金相的影响。

During water quenching of meltten these alloys in fused silica tubes, the icosahedral quasicrystal solidified first, then the decagonal quasicrystal, and finally the crystalline approximants.

将成分为〓〓的合金放在抽真空的石英玻璃管中熔融后水淬，二十面体准晶首先形成，接着是十重对称准晶，最后形成的是准晶的晶体近似相。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了