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Terms for subject Mining containing 保护 | all forms | in specified order only
ChineseEnglish
具系统失效保护作用的安全技术的应急关闭系统system fail-safe action safety technology emergency shut down system
油井保护装置well protector
贾费林保护油砂实验系统Javelin Experimental Protection Oil Sand System
阀座保护液valve seat protection additive

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