Results 51 to 60 of about 3,029 (99)

基于耦合负压的改进型多端口中压直流断路器拓扑研究

open access: yesGaoya dianqi
柔性直流配电网的可靠性建立在成熟的中压直流断路器基础之上,然而直流断路器高昂的造价限制了其在配电网中的应用。为了降低直流断路器在配电网中的投资成本,结合耦合负压换流方式,设计了一种改进型多端口混合式直流断路器。首先,对现有直流断路器的拓扑结构进行了分析;然后,提出了改进型多端口混合式直流断路器的拓扑结构,对分断故障时的动作时序进行了设计;最后,基于Pscad/Emtdc搭建了四端环网型柔性直流配电网,仿真分析了改进型多端口混合式直流断路器切除双极短路故障时的暂态特性,得到了内部电压、电流的分布情况 ...
刘书瀚   +5 more
doaj  

[Rehabilitation guidelines and specifications for traumatic spinal cord injury (2025 edition)]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Professional Committee Of Spine And Spinal Cord Injury Rehabilitation China Association Of Rehabilitation Of Disabled Persons   +3 more
europepmc   +1 more source

[Medical treatment standards for emergency trauma wounded (2025 edition)]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
National Health Commission Of The People's Republic Of China.
europepmc   +1 more source

[Comparison of effectiveness between endoscopic and microscopic anterior cervical discectomy and fusion]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Huang C   +9 more
europepmc   +1 more source

[Single-Center clinical application and analysis of Robot-Assisted endoscopic salivary gland surgery via a postauricular approach]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Han P   +5 more
europepmc   +1 more source

[Research progress on the application of ultrasound technology in the diagnosis and treatment of lymphedema]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Tang ZY, Liu R, Deng CL.
europepmc   +1 more source

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