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射频通信对超声波计量模组的干扰浅析
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作者 蒋韦 苗晓楠 +1 位作者 项勇 张伟 《城市燃气》 2022年第6期14-19,共6页
为提高计量计价的准确性并为客户提供更优质的服务,国家开始大力推广超声波计量技术;超声波燃气表打破了传统机械表的计量和计费模式,实现了高精度的微小流量计量,并可进行计量体积的温度修正,使计价计费更为公平合理.但是,超声波流体... 为提高计量计价的准确性并为客户提供更优质的服务,国家开始大力推广超声波计量技术;超声波燃气表打破了传统机械表的计量和计费模式,实现了高精度的微小流量计量,并可进行计量体积的温度修正,使计价计费更为公平合理.但是,超声波流体计量技术,较之传统机械计量方式,具有可靠性不高和易受干扰等问题;同时,现阶段通信技术的发展,无线射频通信信号无处不在的条件下,成为了超声波流体计量需要克服的主要问题,本文将对此展开论述,以供参阅. 展开更多
关键词 射频信号 传导 辐射 屏蔽 防护器件 接地
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MXenes in tribology:Current status and perspectives
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作者 xiaonan miao Zhangpeng Li +2 位作者 Shuwen Liu Jinqing Wang Shengrong Yang 《Advanced Powder Materials》 2023年第2期11-38,共28页
MXenes are an emerging class of new two-dimensional materials, which have been widely used in energy storage,catalysis, sensing, biology, and other fields due to their unique structure and properties. The distinct stru... MXenes are an emerging class of new two-dimensional materials, which have been widely used in energy storage,catalysis, sensing, biology, and other fields due to their unique structure and properties. The distinct structure,low shear resistance, and easy-to-modify ability endow MXenes with particularly superior lubrication potentials.This review highlights the research status and applications of MXenes lubrication categorized into solid lubricants, lubricant additives, and reinforcement phase parts, summaries the influencing factors and lubricationmechanisms of MXenes lubrication, points out some unexplored research fields and unsettled questions, and thenputs forwards possible solutions and prospects for the future research. The lubrication advances and potentials ofMXenes are fully verified. Predictably, the emerging MXenes lubricants will exhibit remarkable applicationprospects in advanced manufacturing such as machining industries, automotive industries, micro/nanoelectromechanical systems, and spacecraft components. 展开更多
关键词 MXenes Lubricant Influencing factors Lubrication mechanisms Advanced manufacturing
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