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Terms for subject Metallurgy containing 封层 | all forms | in specified order only
ChineseEnglish
双层密封放灰阀double-seal dust valve
双层密封放灰阀double seal dust valve
密封涂层air-tight coating
封闭层sealing coat
封闭层seal coat
封闭含水层confined aquifer
层上密封over-bed seal
黑色封层black seal

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