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- You can select single, dual or multi frequency among Germany (DCF, 77.5kHz), US (WWVB, 60kHz), Japan(JJY40 &NJJY60), or UK(MSF 60kHz) . 全球独创铜字面电波表。根据不同国家的频率，生产单频，双频，多频的机芯（DCF，JJY，NJJY，MSF，WWVB）。
- The high frequency pulse 50-100/sec is known as dense wave, the low frequency pulse 2-5/sec termed as rarefaction wave. 频率快的叫密波（高频），一般在50-100次/秒，频率慢的叫疏波（低频），一般在2-5次/秒。
- The nickel electroforming layers with nanocrystalline (nc) were obtained by using high frequency pulse current and strong electrolyte flushing. 采用高速冲液电铸装置、高频脉冲电流等方法,制备出金属镍纳米晶粒电铸沉积层。
- In the paper, the high frequency pulse tube coolers (PTCs) developed for 80 K and below temperature application are introduced. 摘要首先介绍了作者开发的可用于80K及以下温区的高频脉冲管制冷机。
- The paper introduction mechanism,application,selectio principal and some attentive items using of high frequency pulse TIG welding machine. 介绍高频脉冲TIG焊机的机理、用途、选型原则和使用时的注意事项。
- Using a high frequency pulse radar of 300MHz, radar sounding was carried out at 150 points on Collins Ice Cap and the echo profile of bedrock in 15km distance was given. 使用一台300MHz高频脉冲雷达，对柯林斯冰帽150个测点进行冰厚探测，描绘出15km冰床雷达回波剖面。
- To drive the two-phase hybrid stepping motor, we adopt constant frequency pulse and subdivides drive circuit with M535, which with low speed vibration and precision orientation. 采用M535驱动器作为步进电机的驱动控制器，采用具有低速振动和定位精度高的恒频脉宽细分驱动电路；
- This paper presents that developing ultrahigh frequency pulse EDM generator of adjustable duty ratio by CPLD based on the characteristic of CPLD,complete hardware logistic. 从CPLD具有完全硬件逻辑的特点出发,提出了用CPLD发生占空比可调的超高频电火花加工脉冲信号的设想。
- multi frequency energy harvesting 多频能量采集
- multi frequency signaling system 多频信令系统
- Dual Tone Multi Frequency(DTMF) signal DTMF信号
- Brazing quality and product reliability are both increased as using high frequency pulse microplasma arc heating process for assembly brazing of cathode and photoetching grid of electron tube. 采用高频脉冲微束等离子弧做为电子管阴极和光刻栅极装配钎焊工艺的热源;提高了钎缝质量和产品的可靠性.
- Duke University's researchers use a specific sequence the radio frequency pulse to come “the attack” the fat member and the hydrone, simultaneously compares their resonance frequency. 杜克大学的研究人员使用一个特定序列的射频脉冲来“攻击”脂肪分子和水分子，同时比较它们的共振频率。
- By principally using constant frequency pulse mixing wide f raction driving technology, the chip microprocessors controlling system for real izing stepper angle fraction is researched and analyzed. 本文采用单片机控制系统实现步距角细分，主要以恒频脉冲调宽细分驱动技术进行研究与分析，建立了以单片机为核心的微机控制系统并且进行了控制程序的设计与试验。
- When high frequency pulse current is applied to CC billet,the centerline pipe and centerline crack in the billet are eliminated,and the central segregation and central crack are reduced. 进行了连铸工业试验,效果明显:铸坯中心缩孔和中心裂纹被消除,中心偏析和中间裂纹也得到降低。
- When high frequency pulse current is applied to CC billet, the centerline pipe and centerline crack in the billet are eliminated, and the central segregation and central crack are reduced. 进行了连铸工业试验，效果明显：铸坯中心缩孔和中心裂纹被消除，中心偏析和中间裂纹也得到降低。
- Also developing ultrahigh frequency pulse celectro-discharge machining(EDM) generator of adjustable duty ratio by CPLD based on the characteristic of CPLD,complete hardware logistic. 从CPLD完全硬件逻辑的特点出发,使用CPLD发生占空比可调的超高频EDM脉冲信号。
- Dual Tone Multi Frequency detection [DTMF detection] 双音调多频探测
- dual tone multi frequence (DTMF) 双音多频
- Dual Tone Multi Frequency generation [DTMF generation] 双音调多频放射
