| 1. | Line frequency and voltage tests for electronic measuring instruments
电源频率与电压试验 |
| 2. | Line frequency and voltage test
电源频率与电压试验 |
| 3. | Line frequency induction furnace
低周波感应电炉 |
| 4. | The method of environmental test for analytical instruments - line frequency and voltage test
分析仪器环境试验方法电源频率与电压试验 |
| 5. | Typically caused by distortions to the frequency components below the horizontal line frequency
它沿水平方向逐步扩展,通常是由低于行频的频率畸变造成的。 |
| 6. | This is fairly commonly utilized , and affects the line frequency component ( and odd harmonics )
这种作法已经被广泛应用，并可以用以改善市电频率成分（包括奇次谐波。 ） |
| 7. | The person that pass by the path asks a pedestrian , pedestrian dan yun nods line frequency or prevent a river from 15 north , come 40 on the west battalion cropland
道旁过者问行人，行人但云点行频或从十五北防河，便至四十西营田。 |
| 8. | Ddg series low - voltage large - current dry - type transformers special transformers for line frequency furnaces , electro - slag furnaces , resistance furnaces , and salt bath furnaces applications ; small - capacity high - voltage transformers
各种特殊变压器工频炉变压器电渣炉变压器电阻炉变压器盐浴炉变压器小容量高压变压器等 |
| 9. | However input current distortion at the zero - crossing of the input voltage is a common problem in active pfc converters , and it becomes more serious as the line frequency is increased . the purpose of this thesis is to reduce the zero - crossing distortion of input current at high input frequency application
但有源pfc变换器存在输入电流过零畸变的缺陷,并且随着输入频率的升高而越来越严重,本文的工作就是针对解决高输入频率下严重的输入电流过零畸变而展开的。 |
| 10. | After compared lots of literatures and methods , we offer the norm for selecting different filters . that is to say , in arrhythmia analysis , the integer coefficient lowpass filter is adopted , while in heart rate variability analysis , the high pass filter designed by all - pass minus low - pass filter or filter which can remove both baseline wander and 50hz power - line frequency at one time is used
在对大量文献进行比较、研究的基础上，针对不同的临床应用目的，提出了各种滤波器的选用准则：在心律失常分析中选用整系数低通数字滤波器对原始心电信号进行滤波；在对心率变异信号进行分析时需先用低通滤波器滤波然后再采用全通减低通方法设计的高通滤波器或者一次性滤波器进行滤波。 |
