lever mechanism; force-multiplying mechanism
Technical term for a mechanism that amplifies force, such as in bicycle brakes or metal shears. Not an everyday word.
This bicycle's brakes use a lever mechanism.
Metal shears with a force-multiplying mechanism can cut thick plates with less effort.
倍力機構 is a technical compound referring to a mechanism that multiplies force, while てこ is the simple everyday word for 'lever'.
Compound of 倍力 (force multiplication) and 機構 (mechanism). A straightforward technical term.