But business lobbies, especially whiskey rectifiers and proprietary drug manufacturers, despite all the power of Wiley's coalition, kept the pure food bill from becoming law.
但是食品企业的说客们，特别是威士忌蒸馏设备商和拥有专利的药品制造商，不顾威利联盟的所有力量，阻碍纯净食品法案成为法律。
Current difficulties of using nanotubes to make molecular elements and nanocircuits on large-scale are emphatically analyzed, and potential applications of nanotube rectifiers are suggested.
着重分析了现阶段利用碳纳米管大量研制分子元器件及纳米电路所面临的困难，并对碳纳米管整流器件的应用前景作了展望。
Vacuum rectifiers are characterized by the following.
真空管整流器具有如下的特性。
Middle Voltage Inverter; rectifiers; net communication.
中压变频器；整流器；网络通信。
The V30200C offers several advantages over planar Schottky rectifiers.
V30200C具有比平面肖特基整流器更出色的多种优势。
One of the key factors of affecting power factor of rectifiers is control technique.
控制技术是影响整流器功率因数的关键因素之一。
In this paper a current sensorless control strategy of three-phase PWM rectifiers is presented.
提出了一种无电流传感器的三相pwm整流器控制策略。
The appearance of PWM rectifier offers a new way to solve the problem from the traditional rectifiers.
PWM整流器的出现为解决传统整流器的这些问题提供了新的途径。
The efficiency curves of rectifiers with central tap and coupled inductor are compared via experiments.
通过实验，比较了中心抽头型和偶合电感型效率变化曲线。
One of the problems of the most diode rectifiers is that they include large harmonic contents in its input current.
输入电流谐波含量高是多脉波二极管整流电路的一大缺点。
PWM rectifiers have the characteristics of large power factor, bidirectional power flow and constant direct voltage.
PWM整流器具有功率因数高、能量可双向流动、直流电压恒定等优点。
What is needed are smaller rectifiers which would, by very dint of their size, rectify current of an appropriate frequency.
我们需要的是比较小的整流器，正是凭藉它们较小的尺寸，来对相应频率的电流进行整流。
For rectifiers in classified areas, the rectifier wiring schematic shall be attached to the inside of the rectifier top lid.
对于机密区的整流器，其布线图应该紧靠整流器顶盖的内侧。
The reasons why reverse current protection is not necessary in rectifiers of direct current traction substation are described.
通过分析，阐述了直流牵引变电所内的整流器不必设置逆流保护的理由。
But this useful technology needs high power factor, low harmonics pollution rectifiers and inverters to be its energy converters.
而分布式发电技术需要功率因数高，谐波污染少的大功率整流逆变系统作为其能量转换装置。
This paper describes the basic working principles and control methods of three-phase high- frequency boost & buck IGBT SPWM rectifiers.
文中介绍了IGBT升压与降压式三相高频SPWM整流器的基本工作原理和控制方法。
The application of controllable silicon rectifiers in diaphragm electrolysis in Qingdao Haijing Chemical Group co., Ltd. was introduced.
介绍了可控硅整流系统在青岛海晶化工集团有限公司隔膜电解生产过程中的应用情况。
The monitoring method of detecting the fault conditions of rotating rectifiers in synchronous generators with brushless excitation is studied.
介绍了一种准确识别无刷同步发电机旋转整流器故障的监测方法。
However, the current in the nanoantennae oscillates at a rate of trillions of cycles a second, which is beyond the range of existing rectifiers.
但是，纳米天线内的电流的频率高达每秒万亿次，这超出了现有整流器的工作范围。
Recognizing faults of rotating rectifiers is one of the difficult problems in monitoring synchronous machines with brushless excitation systems.
旋转整流器故障识别是无刷励磁同步电机故障监测的难点之一。
The modified bridge rectifiers are connected by series or parallel, to compose the double converter, that can be used to high power rectifying load.
将改进型桥式整流器串接或并接构成双重化变流电路，可用于大功率整流负载。
Effects of current form on electroplating processes were elucidated. Specifications of the rectifiers for different plating processes were recommended.
阐述了电流波形对电镀工艺的影响，对不同的电镀工艺选用不同规格的整流器提出了建议。
The article introduces the direct power control (DPC) principle and constitution for three-phase boost - type PWM rectifiers and analyses switching table.
介绍了三相电压型PWM整流器直接功率控制(DPC)系统的组成与原理，分析了开关表的形成机理。
The main circuit of power supply is made up of pulsed generators with flywheel, rectifier transformers, thyristor converters, diode rectifiers and switches.
电源主回路主要由飞轮脉冲发电机、整流变压器、晶闸管变流设备、硅整流器、开关网络等组成。
At present, in the field of power electronics applications, most of the drive systems of AC motors use diode rectifiers and phase-control thyristor rectifiers.
目前电力电子应用领域中，绝大多数的交流电动机驱动逆变器前级都采用了二极管整流器或晶闸管相控整流器。
So a virtual line flux has been constructed to serve as the oriented vector instead of the line voltage vector to remove the AC voltage sensors and reduce the cost of PWM rectifiers.
采用类似于交流电机磁链观测的方法来构造一个虚拟电网磁链，可以代替电网电压作为PWM整流器矢量控制中的定向矢量，达到省去交流侧电网电压传感器，降低PWM整流器成本的目的。
So a virtual line flux has been constructed to serve as the oriented vector instead of the line voltage vector to remove the AC voltage sensors and reduce the cost of PWM rectifiers.
采用类似于交流电机磁链观测的方法来构造一个虚拟电网磁链，可以代替电网电压作为PWM整流器矢量控制中的定向矢量，达到省去交流侧电网电压传感器，降低PWM整流器成本的目的。
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