pfm

Soft switching control of high frequency induction welding power supply with PWM and PFM

高频感应焊接逆变电源PWM和PFM软开关控制

互联网摘选

PFW was added based on PWM, and switching circuit between PWM, PFW and control circuit of external characteristic were designed, the control system fulfilled the higher request, and have double excellence of PWM and PFM.

在PWM控制的基础上引入PFM控制，并设计出PFM与PWM的切换电路及外特性控制电路，实现了设计的控制要求，使整个控制系统具有PWM和PFM的双重优点。

互联网摘选

At present, W and W alloy are considered as a promising candidate for plasma facing material ( PFM) of International Thermonuclear Experimental Reactor ( ITER) because of their high thermal conductivity, high melting and low sputtering erosion.

目前，钨和钨合金由于良好的热传导性，高熔点，低溅射率等优良特性被普遍认为是最有希望成为国际热核聚变实验堆（ITER）等离子体面壁材料的候选材料之一。

互联网摘选

Objective : To investigate the effect of PFM restoration in type II diabetic patients with periodontitis.

目的: 研究非依赖型糖尿病患者经牙周基础治疗后,进行烤瓷冠修复对牙周情况的影响.

网络文摘精选

The author bas joined in and auc-cessfully accomplished a PFM DC regulated power supply using high frequency fast switching thyristor, which has been adopted in practical application.

笔者曾参与研制成功一种利用高频型快速晶闸管实现的PFM型直流稳压电源，已付诸实际使用。

互联网摘选

Apply PWM + PFM control technology, constant current output, stable welding current.

采用PWM+PFM控制技术, 恒流输出, 焊接电流稳定.

互联网摘选

The structure of the transmission system in the PFM optic transmitter is designed.

本文的研究工作有以下几个方面:设计PFM光发射机 的传输系统结构.

网络文摘精选

The study on appling the hydrocolloid impression material to PFM crown and bridge

寒天印模材料在烤瓷冠桥修复中的临床应用

互联网摘选

Conclusion: The results indicate that the method of mixed porcelain to make new colors for PFM prosthesis does work, and the mixing procedure could be conducted by accurate data in this study or more.

结论：采用两种或多种瓷粉混和的方法，可以弥补受色号限制的金瓷修复体色彩不足的缺陷，所得数据可指导临床混色时参考。

互联网摘选

Ni-Cr alloy and Au-Pt alloy are principal alloys which used to make PFM in prosthodontics.

Ni-Cr合金、Au-Pt合金为目前口腔修复中制作金属烤瓷修复体的主要合金.

互联网摘选

A study of the effect of root canal pin on increasing the strength of bending resistance of PFM crown abutment

根管钉加强烤瓷冠基牙抗折强度作用的研究

互联网摘选

The Design of PFM Power Management IC Using the Minimum Off Time Control Theory

利用最小关断时间控制原理的PFM电源管理芯片的设计

互联网摘选

A clinical study of porcelain-fused-to-metal ( PFM) of combined post crown lingual plate to restore anterior teeth clinching bite

桩冠联体金属舌面板烤瓷冠修复前牙咬合过紧的临床观察

互联网摘选

Recommended PFM to modulate and demodulation.

介绍了PFM调制和解调.

互联网摘选

Familiar with PWM , PFM control chip, IGBT, MOSFET, high-frequency transformers and magnetic elements.

熟悉PWM、PFM控制芯片 、 IGBT, MOSFET等功率器件 、 高频变压器、电感等磁性元件.

互联网摘选

[ Objective] To evaluate the clinical treatment effects of four-handed technique applied at porcelain-fused-to-mental ( PFM) restoration.

目的探讨四手操作在烤瓷修复临床操作的应用效果。

互联网摘选

Objective To evaluate the result of a simple method of rehabilitating incisal path and overlap& overbite relation in maxillary frontal cosmetic PFM prostheses.

目的：评价一种重建前牙切道和覆牙合覆盖关系的简单方法，在上颌前部美容性烤瓷冠修复中的应用效果。

互联网摘选

The piezo response force microscopy ( PFM ) is a useful method to study ferroelectric domains of ferroelectric films.

压电响应力显微镜为铁电薄膜电畴的研究提供了一种有效的检测方法.

互联网摘选