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периодическое действиеstresses
automat. 间断动作
avia. 间断作用
el. 抽样; 取样动作
tech. 周期作用; 周期动作
периодическое действие: 78 phrases in 15 subjects
Aerodynamics1
Aerohydrodynamics1
Chemistry4
Construction5
Distillation2
Electronics8
Food industry2
General9
Hydraulic engineering2
Military2
Oil / petroleum2
Oil processing plants6
Refrigeration1
Technology28
Textile industry5