查询词典 Labrador Current

Due to the different drift velocity of Bi atoms and Sn atoms under high current density, the electromigration properties of eutectic SnBi are unique.

由于铋原子和锡原子在高电流密度下具有不同的迁移速率，因此共晶锡铋钎料具有独特的电迁移特性。

A piece of dancing driftwood caught his attention and his eyes followed it down the current.

一根浮沉不定的漂木引起了他的注意，他的目光随着它顺流而去。

According to mechanical analysis of subsea wellhead for deepwater drilling, a comprehensive stability analysis method is established. The marine environmental loading, drilling vessel or platform drifting, riser mechanical behavior, nonlinear behavior between casing string and formations are considered. Case analysis shows, the lateral displacement and bending moment of wellhead increases along with riser top tension ratios and current velocities.

根据深水钻井水下井口系统整体受力分析，建立了井口力学稳定性分析方法，该方法综合考虑了海洋环境载荷、钻井船或平台漂移、隔水管力学性能、套管柱与地层之间的非线性响应等因素的影响，可以实现井口力学性能分析。

The bigger top tension will cause the wellhead to be over-pulled and increase the probability of wellhead collapse. As the mean drifting of drilling vessel or platform increases, the wellhead displacement and bending moment nearly linear enlarges. The greater current velocity may result in wellhead instability because of its limited bearing moment capacity. Therefore the drifting control is very important to subsea wellhead stability. The wellhead stability may be improved by taking measures such as enhancing the conductor bending strength, controlling scour depth on seabed, getting geological data sampling of shallow formations.

算例分析表明，水下井口的横向偏移及弯矩随张力比和海流流速的增加而大幅增大，顶张力过大会引起井口稳定性变差；随着钻井船或平台漂移量的增加，井口的横向偏移和弯矩近似线性增加，控制好钻井船或平台的漂移非常重要；由于井口承受弯矩的能力有限，较大海流流速情况下可能造成井口失稳；提高导管抗弯强度、控制泥线处管柱冲刷、获取浅部地层的取样数据等措施可以增强井口稳定性。

The 4 one big mark that is current country financial disorder is public money eats and drink, extravagant.

四是当前农村财务混乱的一大标志是公款吃喝、挥霍无度。

But it also represents a departure: Current one-cup setups take the familiar brewing process of an espresso or drip coffee maker and put it inside a disposable disc or cartridge.

但它也代表着一个出发日期：目前杯设置采取熟悉酿造过程中的一个咖啡或咖啡滴灌制造并把它内一次性光盘或磁带。

ABSTRACT: A Rockwell PowerFlex7000 Variable Frequency Drive is used in JiuZHou Electric medium voltage drive test bay as the converter. Because of it belong to the current source drive, it has the function of the four quadrant, it can achieve the energy feedbackmake the motor brake,also has the advanced vector control technology, so it can achieve all kinds of load test, there are no other drives can replace it in simulate motor load. PowerFlex7000 drive has ability to achieve the full load test before the drive leave factory.

摘 要：罗克韦尔PowerFlex7000变频器在九洲中压变频实验站测试系统中作为变流逆变器使用，由于本身属于电流源型变频器，具有四象限运行功能，能够实现能量的回馈和对电机的制动，先进的矢量控制技术，可以实现各种复杂多变的负载特性，在模拟电机负载方面起到了其他变频器无可替代的作用，实现了变频器出厂之前的满负荷测试。

Based on the systematic analyses of the applications and developments of step motor, the driving technique of step motor are analyzed in this paper, and upon these statements, a mathematical model of VR step motor is built. With this model, the coil current of step motor with chopping driver and the non-loaded starting frequency are simulated for the base of designing of step motor servo system.

本文在系统分析了步进电机应用和发展的基础上，对步进电机的驱动技术作了详尽的论述，建立了三相反应式步进电动机的数学模型，并利用该模型对斩波驱动的步进电机绕组电流及空载运行的启动频率等进行了仿真，为步进电机驱动系统的设计提供了依据。

Based on modeling and simulation of the steady characteristic of five-phase hybrid stepping motor driver system with fixed-chopping frequency, constant total current driving and new pentagon winding connection pattern, the paper studies the dynamic characteristic of the system, especially single step response characteristic.

本文在建立绕组接法采用新五边形接法，驱动方式采用恒频斩波恒总流驱动时的五相混合式步进电动机系统的稳态仿真模型的基础上，分析研究了其动态特性，并重点对单步响应特性进行了研究与分析。

Based on the current electrical driving system of fuel cell powered EV, the suitable structure of the electrical driving system has been proposed. The structure and parameters of the components of the electrical driving system were also discussed.

基于对已有的燃料电池电驱动系统进行的分析，设计了适用于燃料电池电动车的电驱动系统结构，并对组成系统的各个部分的结构和参数设计进行了讨论。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。