与"permanetn hardness"相近的词条

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• permanent wilting
• permanent wilting percentage
• permanent wilting point
• permanent(and)total disability
• permanently inactivated
• permanetn hardness
• permanganate
• permanganate-chlorine treatment
• permanganate number
• permanganate oxidation time
• permanganate potassium
• Permanganate salt
• permanganate test
• permanganate titration
• permanganate value
• Permanganic

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