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BJ1000型压电式爆炸压力传感器

open access: yes, 1982
爆炸所形成的冲击波压力是确定水中兵器的实际爆炸威力以及研究水下爆炸物理现象的基本参数之一。由于水下爆炸冲击波是一个压力范围相当宽,频率相当高的随时间变化的过程,而且水下工作环境条件恶劣 ...
严忠礼, 郭淳义
core  

压电水听器线阵与DFB光纤水听器线阵的分析

open access: yes, 2011
分布反馈式(Distributed Feedback,DFB)光纤激光水听器因其多方面优越的性能近些年发展迅速,国内已对由其组成的线阵进行了成功的湖试。为检验更大规模DFB光纤激光水听器线阵的实用性能及与传统压电水听器线阵的性能区别,在某湖进行了实验,获得了传统压电水听器线阵和8元DFB光纤水听器线阵的相关数据。分析了阵元一致性并在不同的信噪比情况下比较了两种线阵的指向性性能差别。结果表明,在阵元一致性上压电阵优于光纤阵,在窄带大信噪比情况下两种水听器阵的指向性性能相似 ...
张文涛   +5 more
core  

[How I treat vasovagal syncope in children]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Zou RM, Wang C.
europepmc   +1 more source

[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

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