查询词典 power on

Especially in direct-driven wind power generation system, it requires the full power converter, so it must pay more attention on multilevel converte.

尤其是对于直接驱动型风力发电系统，需使用全功率变流器，研究多电平变流器有一定的现实意义。

The mathematical model and working modes of a novel three-phase two-arm three-level neutral-point-clamped pulse width modulation rectifier suitable for direct-driving wind power system are analyzed in detail, and the constant frequency control strategies based on space voltage vectors are proposed and applied to the rectification conversion of direct-driven power generation system.

系统分析了新型三相两桥臂三电平中性点箝位脉宽调制(pulse width modulation，PWM)整流器的数学模型和工作模式，提出了基于空间电压矢量的恒频控制策略，并将其应用于直驱风力发电系统整流变换中。

A mathematical model of high-voltage short distance ring power transmission lines is developed and a multiple modules coupling model of this power transmission system fit for digital real-time simulation is further presented on the basis of known models of synchronous machine and composite load.

建立了高压短距离环形电力传输线的数学模型，并在已知同步发电机与综合负载模型的基础上，进一步提出了适合于该电力传输系统数字实时仿真的多模块耦合模型，同时给出了相应的数字积分方法。

Focuses on the structure of the temporary emergency power distribution system, charge-discharge control method, charging circuit devices, the regional distribution system of the structure and power distribution board control circuitry.

着重介绍临时应急配电系统的结构、充放电控制方式、充电装置电路、区域配电系统的结构和配电板控制电路。

YongKang Dewei Co., Ltd. It is mainly engaged in development and product on of power tools such as cordless series, angle grinder, electric drill, marble cutter and jig saw. It is one of famous domestic power tool manufacturers.

4B02 (W4-B02)得伟公司是一家专业生产磨光机、电钻、修边机、切割机、电圆锯、曲线锯、电刨、搅拌机等电动工具企业，公司严格按照ISO9000质量管理体系要求组织生产，产品通过 3C认证，获得了GS、CE认证证书，产品被评为&中国优质名品&。

Analyzing the calculating process of belt conveyor with high angle theoretically, starting from its theoretic calculate the cross sectional area of materials and peripheral force, shaft power of drum, power of motor, using point by point method to get the resultant strain of every drum and torsion of driving drum, calculating the maximum strain and the maximum reverse stopping torque, to give the support on theory for using belt conveyor with super-long distance, high angle under the coal mine.

本文针对长运距、大倾角、高强度带式输送机设计过程中存在的问题，从四个方面对大倾角带式输送机进行分析研究：从理论上解析大倾角带式输送机的计算过程，从大倾角带式输送机的理论入手，详细计算物料的横截面面积、圆周力、滚筒轴功率和电机功率，利用逐点计算法计算各个滚筒的合张力以及传动滚筒的扭距，计算出胶带的最大张力和最大逆止力矩，给长运距、大倾角皮带机在煤矿井下的使用给予理论上的支持。

In addition, by count of vibration power the influence of the vibration frequency on driving power is analysed.

通过振动装置的功率计算，分析了振动频率对驱动功率的影响。

Although the power impulse s overlap(on six-and eight-cylinder engines),there are times when more power is being delivered than at other times.

尽管在六缸或八缸发动机中，动力冲击重叠发生，但是有时产生的动力会大些。

On the other hand, steady and reliable remote meter for reading electricity is the required urgently for solving problems of electric power department and electric power operation business.

同时在计算机本身的领域里面，微型化和专业化成为了发展的新趋势，同样也需要嵌入式系统的支持。

The products are widely applied in high buildings, shopping centers, airdromes, sub-way, stations, docks, petroleum, chemistry industry, nuclear power stations, nuclear nukes, residential areas, light rail transit, power plants and so on, wherever should be fire proof, burst proof.

产品广泛应用于高层建筑、购物中心、机场、地铁、车站、码头、石油、化工、核电站、核潜艇、居民密集区、轻轨、电厂等需防火、防爆、等场所。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。