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钝化作用 dùnhuà zuòyòng
chem. passive action
el. decontamination
expl. passivation-desensitization; phlegmatization
met. inactivation; passivating
oil deactivation; passivation
space passivating action
钝 化作用
: 7 phrases in 4 subjects
Agriculture3
General1
Metallurgy2
Technology1