1) full-function controlled power source
全功能弧焊电源
1.
The ideas of constructing of the control circuit of full-function controlled power source for arc welding are suggested in this paper, with their features analyzed.
提出了全功能弧焊电源控制电路的各类设计方案，分析了它们的特点；并提出了一种电源控制系统的电路设计方案；分析其基本工作原理和获得的各类电源输出外特性。
2) arc welding power
弧焊电源
1.
The establishment of testing platform for intelligently evaluating and diagnosing arc welding power source;
弧焊电源智能评价与诊断系统测试平台的建立
2.
The paper introduces the dynamic characteristic and the structure of arc welding power,and gives a method of designing arc welding power which using DSP chip as a controller.
采用状态空间平均法建立了全桥逆变式弧焊电源主回路的平均状态方程,经过线性化处理推导出频域小信号模型。
3.
With the help of the GUI,the electrical parameters of arc welding power could be tested by multi-microprocessor cooperation.
文中通过Qt/Embedded编程,以三星公司的S3C2410处理器设计的硬件系统为开发平台,为嵌入式弧焊电源测试设备设计了一款嵌入式图形界面。
3) arc welding power supply
弧焊电源
1.
Double close loops control system of peak current mode of inverter arc welding power supply;
逆变弧焊电源峰值电流模式双闭环控制系统
2.
Study on inverter arc welding power supply of ZVZCS three level converter;
ZVZCS三电平逆变弧焊电源
3.
ZVS of inverter arc welding power supply under low-load conditions;
逆变式弧焊电源轻载状态下零电压软开关的实现
5) arc welding power source
弧焊电源
1.
Study on electromagnetic disturbances characteristics of arc welding power source;
弧焊电源电磁骚扰特性研究
2.
Situation on measuring method of dynamic characteristic of arc welding power source;
弧焊电源动特性测定方法的研究现状
3.
Intelligent system of evaluation,test and analysis for arc welding power source;
弧焊电源智能化测试、分析与评价平台
补充资料：宫颈功能不全
宫颈功能不全
系指子宫颈内口闭锁不全，极少为先天因素所致。常继发于较大月份人工流产，分娩、手术助产、宫腔手术或宫颈锥切术后，引起宫颈内口括约肌损伤，使宫颈松弛。也有报告因母亲怀孕期间服用过己烯雌酚，影响女胎子宫下段发育，峡部扩大致内口闭锁不全。确切的诊断有时比较困难。临床表现一般为孕中期自然流产且常为反复发生，先有胎膜破裂，随即出现腹痛排出胎儿。应于非孕期进行检查，若7号宫颈扩张器无明显阻力即可通过宫颈内口视为宫颈功能不全。其他于孕期对宫颈内口的观察及测量常不可靠。治疗一般于孕12～16周行子宫颈内口缝扎术。孕36周或临产后拆除缝线。于非孕期行宫颈内口修补术，效果似更好。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条