与"back-pressure valve"相近的词条

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• back-pollinating
• back power
• back pressure
• back pressure porosity
• back pressure regulator
• back-pressure valve
• back projection
• back projection composite image
• back projector control
• back projector control(BPC)
• back-propagation
• back propagation network
• back purge
• back-purge system
• back radiation
• back radiator

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