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防冻措施 fángdòng cuòshī
bridg.constr. frost-proof measure
expl. ice control
hydroel.st. frost protection measure
met. antifreezing precaution
tech. anti-freezing measure; frost precaution; means to prevent freezing
防 冻措施
: 5 phrases in 3 subjects
Engineering geology1
Refrigeration1
Technology3