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packer fluid
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充填于油管和油层套管之间,起到防腐和平衡压力作用的液体。又称环空保护液。
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ultraviolet refractometry
ultraviolet resistant fiber
ultraviolet satellite
ultraviolet seeker
ultra-violet sensitizer
ultraviolet sensor
ultraviolet sky
ultraviolet sky survey
ultraviolet source
ultraviolet spectrograph
ultraviolet spectrometer
ultraviolet spectrometry for pharmaceutical analysis
ultraviolet spectrophotometry
ultraviolet spectroscopy
ultraviolet spectrum
ultraviolet stabilizer
ultraviolet stable point
ultraviolet star
ultraviolet sterilization
ultraviolet sterilization technology
ultraviolet surveys
ultraviolet telescope
ultraviolet test lamp
ultraviolet therapy
ultra-violet transmitting
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