查询词典 phase transition

In order to explore the optimum condition of transition of Pb, the transfer behavior of Pb through the emulsion liquid membrane system of TBP-Span80-atoleine-kerosene was studied. The study analyzed the effect of Pb transport rate of membrane phase component, pH values in external aqueous phase, acidness in internal aqueous phase, rew and concentration of metal ions in external aqueous phase. In the case of the optimal technological conditions, the waste water of Pb, Cu and Ni was treated.

为了探求乳化液膜法迁移铅Pb(Ⅱ的最佳条件，采用磷酸三丁酯－Span80-液体石蜡－煤油乳化液膜体系研究了Pb的迁移行为，探讨了膜相组成、外水相pH、内水相酸度、乳水比、Pb起始浓度对Pb迁移率的影响，确定了最佳迁移条件，并在此条件下对含Pb、Cu和Ni废水进行了处理。

The pressure-induced structural transition from the Zinc blende to a rocksalt phase occurs at about 12.6 GPa, and at the transition point the relative volume reduction is close to 13%.

发现样品在12.6GPa附近存在一个从立方闪锌矿型到立方岩盐矿型的结构相变，并且在相变点附近存在较大的体积收缩，相对体积变化率达13%。

The Northern Sui and Tang Dynasty being in the Middle Time of the history, it is the transition phase by the powerful family politics to the bureaucrat politics in our country ancient history, and the outstanding feature of the transition Process, namely this length other disappears between the imperial authority and the hereditary scholar class' privilege.

处于中国中世纪的北朝隋唐时期，是我国古代史上由门阀政治向官僚政治的转变阶段，而这一转变过程的显著特点，即皇权与士族特权之间的此长彼消。

To fly to the solar system space probes to other planets whose flight can be roughly divided into three stages, namely, from launch to the Earth's scope is not out of phase, out of the scope of the Earth's role in the transition phase, when mainly affected by solar gravity and scope to the target planet is the first three-phase, after which the planet could be captured by the target satellite, or left the target planet became the man-made asteroid.

飞往太阳系其他行星的空间探测器其飞行大致可分为三个阶段，即从发射到未脱离地球作用范围阶段，脱离地球作用范围的过渡阶段，这时主要受太阳引力作用，进入目标行星作用范围是第三阶段，此后可能成为被目标行星俘获的卫星，或者飞离目标行星后成为人造小行星。

An input phase voltage is divided into a main range and a transition range in which new P, M, N conditions and PM, NP, MN transition conditions are defined, some null vector is selected and the condition combination sequence of bidirectional power switches are adjusted in each modulation period to realize the safe, reliable and rapid commutation and the stable operation of the matrix converter.

本发明属于矩阵变换器控制技术，为一种用于矩阵变换器的控制方法，通过把输入相电压划分为主区间和过渡区间、在过渡区间定义新的P、M、N状态和PM、NP、MN暂态以及在每个调制周期内选择特定的零矢量并调整双向功率开关状态组合顺序，实现矩阵变换器安全、可靠、快速换流和稳定运行。

Yesterday, be called by media all the time " the tagger of PPG " dress sells brand BONO to announce in Shanghai its transition plans continuously -- the rational management phase that acclaims level to return to a product to give priority to from the mode of overheat, face 25-40 year old in high-end male consumer, no matter be to popularizing the strategy or value strategy to go up, this is founded only half an year, at present the 2nd big dress of domestic sells the shadow that begins to try to cast off forerunner PPG it seems that continuously, but also analytic personage points out, the transition of BONO also meant overall to cancel the plan of its early days, admit the failure of the operation.

昨日，一直被媒体称为"PPG的尾随者"的服装直销品牌BONO在上海公布其转型计划——从过热的模式炒作阶段回归到产品为主的理性经营阶段，面对25-40岁的中高端男性消费者，不管是在推广战略还是价格策略上，这个创建仅半年，现在国内第二大服装直销似乎开始试图摆脱先行者PPG的阴影，但也有分析人士指出，BONO的转型也意味着全盘推翻了其前期的计划，承认操作的失败。

The main characteristics include: the quiet Sun corona has a rapid response to the flare heating, within 2 second the corona temperature increases nearly one order of magnitude, but later such increase becomes very slowly; the downward velocity at early stage of impulsive phase is too small to be negnected; chromospheric evaporation made by conduction shows some intensely, the maximum evaporated velocity may be as large as 1000 km/s; the chromospheric condensation appears just when the chromospheric evaporation takes place and its place always coincide with that of transition region in the early stage; the maximum of chromospheric condensation occurs also in the early stage of impulsive phase, at which the density in condensation may be larger two order of magnitude than that of surround and the downward velocity may be as large as 100 km/s; after the maximum of chromospheric condensation, its strongth decreases gradually but its width becomes greater with time and have a tendency to transport into deep chromosphere; the front of chromospheric condensation heats atmosphere obviously and the temperature in the chromospheric condensation is higher than the original case; the downware velocity of transition region may be greater than 100 km/s at the early stage; when the evaporated material collide at the top of loop, the densityand the presure there increase rapidly, which result in the formation of a shock wave; and so on.

在改善色球辐射损失和精确分辨过渡区的基础上，通过联立求解连续性方程、动量方程和能量方程，构造了一维磁限制性耀斑环在热沉积作用下的大气动力学模型，获得了耀斑热模型下脉冲相早期较为细致的大气演化理论图象，其主要特征是：耀斑对宁静日冕的加热相当迅速，仅2秒钟日冕温度增加即达一个量级，之后日冕温度增加缓慢；脉冲相早期日冕向下速度很小，几乎可以忽略，热传导驱动色球蒸发，其过程较为激烈，蒸发极大速度可达到1000km/s；色球压缩区与色球蒸发几乎同时形成，且在早期其位置总是与过渡区位置重合；色球压缩极大发生在脉冲相早期，其时密度可高于周围约2个量级，向下速度可超过100km/s；色球压缩极大后，其强度逐渐减弱，但宽度明显增大，且渐渐脱离过渡区往色球传播；压缩区内物质温度要高于原先的大气温度；过渡区下降在脉冲相早期相当迅速，可超过100km/s；当蒸发物质在环顶高速相碰时，环顶的密度、压力迅速增大，且温度也有所增加，导致形成激波，其波面以每秒上百公里的速度自环顶向下传播；在脉冲相前期，日冕软x辐射对色球的加热作用可以忽略；等。

A phase-field model was built by optimizing characteristic parameters in the convec-tional phase-field model for peritectic transition, which is suitable to simulate microstructure evolution for peritectic transition of specific alloys.

通过对当前包晶相变相场模型特征参数的优化，建立了适合对具体合金包晶相变微观组织演化进行模拟的相场模型。

Visual carbon stars whose mid-infrared spectra are mainly dominated by photospheric continuum and show large excesses at 60um, represent a transition phase which follows an interruption of mass loss from the oxygen-rich phase and begins a new phase of the mass loss of carbon-rich material. Excesses at 60um in these stars are the emission from the residual of oxygen-rich material.

光学碳星的中红外能量主要来自光球，在60μm处存在超量发射，人们认为其演化阶段处在抛射富氧物质终止和新的富碳拱星壳层形成之间，其60μm超量发射就是富氧物质的残余效应。

In range of 300℃～900℃, all the transition metal oxide catalysts could get high ammonia conversion, during the initial stages of the reaction, the SO〓 conversion is relatively low since the catalysts have not been sulfureted, but it increases gradually and attain constant with rising temperature and time continuance,〓 is better than other catalysts in reactivity and elemental sulfur selectivity; XRD indicates that, in the SO〓-SCR process, stable transition metal sulfide is generated which is very important to SO〓 reduction and transition metal sulfide probably is the active phase of catalyst, further the reduction of SO〓 by H〓 to H〓S is the limiting step of all process, then the activity is somewhat related to its lattice oxygen yet not so notable; XPS indicates that little sulfur on surface exists as S〓 in sulfate, showing that TiO〓 could restrain the generation of sulfate.

对于过渡金属氧化物催化剂的研究发现，在300℃～900℃范围内，不同的催化剂均可获得很高的NH〓转化率，反应初期由于催化剂还未硫化，所以SO〓的转化率较低，随着温度升高和反应时间的延续，SO〓的转化率逐渐升高并达到了稳定值；七种过渡金属氧化物中，以〓对于NH〓还原SO〓反应的活性和选择性最好；XRD结果表明在NH〓-SO〓反应后生成了稳定的硫化物相，硫化物对SO〓的还原过程具有重要作用，催化剂的活性相可能是过渡金属硫化物，而且在硫化物催化剂上进行的H〓还原SO〓生成H〓S的反应是整个过程的速率控制步骤，所以催化剂的活性与其自身的晶格氧的氧化还原能力有一定的联系，但关系不明显；XPS结果表明催化剂表面的硫大部分以过渡金属硫化物的形式存在，只生成少量的S〓，说明TiO〓催化剂能够较好的抑制硫酸盐的生成。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。