查询词典 phase transition

It is extremely sensitive to the kinds and adding amount of raw materials and sintering aids to zinc titanates ceramics sintering and phase transition.

而且，钛酸锌陶瓷的烧结及相结构转变对原料的选取、助烧剂的种类及加入量极为敏感。

In this paper, with the Buck circuit topology as the exampleof zero-transition soft-switching PWM DC/DC converters, theoperation principle and characteristics of the conventionalZVT-PWM converter and a novel two phase ZVT-PWM converter areanalyzed in-depth respectively.

文中以Buck型电路拓扑作为研究零过渡PWM软开关DC／DC变换器的代表，分别对传统ZVT-PWM变换器和一种新型的两相ZVT-PWM变换器的工作原理及特性进行了深入的分析。

In the case of Cu-45% Ge hypereutectic alloy, a"plate-shaped to granular-shaped"structural transition of primary phase takes place if undercooling exceeds 200K.

采用玻璃净化法，使Cu-39.6%Ge共晶、Cu-36%Ge亚共晶及Cu-45%Ge过共晶合金分别获得200K（0.218T〓）、189K（0.198T〓）及219K（0.23T〓））过冷度。

Then the fixed point of transformation can be found, among which those unstable ones are critical points of phase transition.

然后找出重整化变换的不动点，在所有不动点中那些不稳定不动点是发生相变的临界点。

The sample's conductivity was minimize at 9.19GPa pressure spot, which showed the beginning of structural phase transition from wurtzite to rocksalt.

利用集成有金属薄膜电极的金刚石对顶砧，对微米氧化锌样品进行了原位高压电导率测量。

Simulation results shows this model effectively depict the phase transition behaviors form free traffic flow state to congestion state in the network.

数值仿真结果表明，该模型能较好的描述了网络中从自由流相到拥塞相的相变行为。

The invention provides a nanometer catalyst for liquid phase oxidation process of cyclohexane, which is characterized in that a silica molecular sieve SBA-15 with meso pore canal is taken as a carrier; one or a plurality of transition metals is/are taken as active component, which is highly dispersed in the carrier, with lower content ranging from 1 percent to 3.5 percent of mass.

一种用于环己烷液相氧化的纳米催化剂，其特征在于：采用具有介孔孔道的全硅分子筛SBA-15为载体，一种或数种过渡金属氧化物为活性组分，活性组分在载体上高度分散，含量较低，范围为1％-3.5％质量。

I used the homemade ECDL to measure the 2S-3D two photon transition spectrum of Helium , the advantages are that the expense of homemade ECDL is cheap and have good output power. At the same time, I used the electronic part can be got in the market to manufacture a pulse generator in the experiment, the pulse generator can control the output frequency, the pulse width, the relative phase and also can simultaneously control four sets of systems or instruments need the TTL pulse control. The advantage is that the cost of the pulse generator is cheap and the pulse generator is stable. To isolate the magnetic field I used the magnetic foil to helium cell. I also built a gas discharge system, the switch sequence of this system can be controlled by the pulse generator. Finally I built a detecting system can measure the helium energy state. It is cheap and can be combined with the comb laser system in my laboratory.

本实验是利用一台自制的外腔雷射系统来量测2S-3D的氦原子双光子跃迁，其优点在於自制的外腔雷射之费用非常便宜，也有不错的输出功率，同时在实验中我利用市售的电子零件制作了一台脉冲产生器，可控制输出的频率、脉冲宽度以及相对的相位，且可同时控制四套需要TTL脉冲控制的系统或仪器，优点除了便宜之外，也非常稳定；为了隔绝磁场，利用了磁场隔绝金属箔，我也在实验室中建立了一组气体放电系统，其系统可以用脉冲产生器来控制开关时序，最后，我建造了一个氦原子能阶的量测系统，而且费用低廉，可与本实验室的另外一门研究光梳雷射系统做结合。

I used the homemade ECDL to measure the 2S-3D two photon transition spectrum of Helium , the advantages are that the expense of homemade ECDL is cheap and have good output power. At the same time, I used the electronic part can be got in the market to manufacture a pulse generator in the experiment, the pulse generator can control the output frequency, the pulse width, the relative phase and also can simultaneously control four sets of systems or instruments need the TTL pulse control. The advantage is that the cost of the pulse generator is cheap and the pulse generator is stable. To isolate the magnetic field I used the magnetic foil to helium cell. I also built a gas discharge system, the switch sequence of this system can be controlled by the pulse generator. Finally I built a detecting system can measure the helium energy state.

本实验是利用一台自制的外腔雷射系统来量测2S-3D的氦原子双光子跃迁，其优点在於自制的外腔雷射之费用非常便宜，也有不错的输出功率，同时在实验中我利用市售的电子零件制作了一台脉冲产生器，可控制输出的频率、脉冲宽度以及相对的相位，且可同时控制四套需要TTL脉冲控制的系统或仪器，优点除了便宜之外，也非常稳定；为了隔绝磁场，利用了磁场隔绝金属箔，我也在实验室中建立了一组气体放电系统，其系统可以用脉冲产生器来控制开关时序，最后，我建造了一个氦原子能阶的量测系统，而且费用低廉，可与本实验室的另外一门研究光梳雷射系统做结合。

In the process of the oil and gas field's exploration, when the well contains a great amount of supercritical fluid such as CO2 and H2S, the well blowout, erosion, wax problem and scale problems will take place more frequently. In the process of drilling, when the supercritical fluid emerged by conventional natural gas changes in phase transition, the well blowout will happen.

在油气田的开发过程中，井筒内高含CO2、H2S的超临界态流体，加速油井管柱的腐蚀、结蜡、结垢、灾难性的突发事故的出现；在钻井过程中，气侵的超临界流体在环空相态变化将可能引发钻井井喷。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。