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safety certification
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safety certification
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safety certification
安全认证
由可以充分信任的第三方证实某一经鉴定的产品或服务符合国际通用安全标准或规范性文件的活动。
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ultra-short-period binary
ultra-short-period B star
ultra-short-period Cepheid
ultrashort-period planet
ultra-short-period variable
ultrashort pulse
ultrashort pulse current electrochemical micromachining
ultrashort pulse laser
ultrashort pulse shaping
ultra-short-range projectile interception technology
ultra-short wave transmission system
ultrasil
ultraslow light
ultra-smooth mirror
ultra-smooth surface detection
ultrasoft
ultra soft pseudopotential
ultra-soft pseudopotential
ultrasoft pseudopotential
ultra-soft pseudopotential, USPP
ultrasonic
ultrasonic absorption
ultrasonic additive manufacturing
ultrasonica extractor
ultrasonic agglomeration
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