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frictional brake
el.	摩擦闸; 摩擦制动器
tech.	摩擦制动 (器); 摩擦闸 (瓦); 摩擦刹车; 摩擦测力计; 摩阻刹车

frictional brake : 5 phrases in 2 subjects

Plastics	1
Technology	4