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电磁超声内检测器
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电磁超声内检测器
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电磁超声内检测器
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electromagnetic ultrasonic internal detector
电磁超声内检测器
由一个放置在管道内表面的磁场中的线圈构成,用来检测交变电流通过线圈在管壁中产生感应电流,从而产生洛仑磁力(该力由磁场控制)超声波的装置。又称电磁声学传感器装置。
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agricultural strategic structural adjustment policy
agricultural structure policy
agricultural subsidy policy
agricultural super docking
agricultural supply chain
agricultural surtax
agricultural sustainable development policy
agricultural system
agricultural system and rule
agricultural tariff
agricultural tariff structure
agricultural tax receipt
agricultural tax reform
agricultural tax system
agricultural technique innovations
agricultural technology
agricultural technology anti-freezing
agricultural technology diffusion
agricultural technology evolution
agricultural technology extension
agricultural technology extension agents
agricultural technology for anti-drought
agricultural technology Innovation diffusion
agricultural technology progress
agricultural technology promotion and plant protection subsidies
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