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老化
tech. aging period; ageing period
老化期〈塑料材料〉
plast. period of ageing
老化期
space aging period
老化 期
: 16 phrases in 11 subjects
Aviation1
Chemistry1
Electronics2
General1
Oil / petroleum2
Oil processing plants1
Plastics1
Polymers1
Space2
Technology3
Telecommunications1