A novel hybrid clamp dual-PWM three-level circuit topology is discussed, the switching states of hybrid clamp three-level converters increase to sixty-four from twenty-seven switching states of diode clamp three-level converters.
以电动机磁链定向调速系统为研究对象,提出了一种混合钳位式双PWM三电平变换器的电路拓扑,由于混合钳位式三电平变换器的开关状态由普通二极管钳位式的27个增加到64个,本文提出了通过检测的悬浮电容电压和直流侧电容电压差值来实现冗余矢量的优化方法,确保了直流电容电压的平衡,实现了系统的四象限运行。
A optical structure optimized design of clip-on coupler;
光电话耦合夹钳的优化光路结构设计
intestinal anastomosis forceps
三翼肠钳，肠吻合钳
antecolonic gastrojejunostomy
结肠前胃空肠吻合术
external coloproctostomy of anus
肛门外结肠直肠吻合术
cyst-jejunum loop anastomosis
囊肿空肠肠袢式吻合术
closure of gastro-jejunostomy
胃空肠吻合口闭合术
Application of parachute anastomosis in cholangiojejunostomy
降落伞式吻合在胆肠吻合术中的应用
Clinical Application of Valtrac Ring in Intestinal Anastomosis;
Valtrac吻合环在肠吻合中的临床应用
appendix intestinal clamp
阑尾肠钳，肠夹持钳
marginal ulcer of gastroenteric stoma
胃肠吻合口边缘溃疡
dysfunction of gastroenteric stoma
胃肠吻合口机能障碍
trans-abdominl resection and anastomosis of rectum
直肠经腹切除吻合术
Observation of Effect of TME Combined with Double Stapling Technique on Mid-Low Rectal Cancer
中低位直肠癌TME并双吻合器吻合术后吻合口效果观察
Anastomotic Leakage with Double Stapling Device for Radical Resection in 3 Cases with Rectal Cancer
双吻合器法直肠癌根治术吻合口瘘3例
Intestinal anastomosis with the biofragmentable anastomosis ring
生物降解吻合环在140例肠吻合术中的应用
Prevention of anastomotic leakage after anus-preserving operation of lower rectal carcinoma with double stapling device
低位直肠癌双吻合器保肛术后吻合口瘘的预防
Single stapling technique for anus-saving operation in rectal cancer
单吻合器吻合法在直肠低位前切除术中的应用
Treatment of Ⅰ Stage Exeresis and Intestinal Anastomosis for Left Hemicolon Carcinoma Affiliating Obstruction
左半结肠癌并肠梗阻Ⅰ期切除肠吻合手术体会
Clinical Application of Peng's Binding Pancreaticojejunostomy to Prevent the Anastomotic Leakage
彭氏捆绑式胰肠吻合术在预防胰肠吻合口漏的应用
