B2 operated by a machine, or connected with machines or their parts机械的；机械部件的
Charles Babbage's mechanical calculating engines were the antecedents of the modern computer.
Any mechanical problems would upset our plans of driving across the desert.
relating to movement, or to mechanics (= the study of the effect of physical forces on objects and their movement)机械的
C2 also mechanistic disapproving without thinking about what you are doing, especially because you do something often习惯性的