a set of instruments used in operating a vehicle or a machine （一套）仪器，仪表 the aircraft’s instrumentation 飞机的仪表
the way in which a piece of music is written for a particular group of instruments 器乐谱写 the standard pop instrumentation of two guitars, bass and drums 两把吉他、贝司和鼓的标准流行乐器
Word Originmid 19th cent.: from French, from instrumenter ‘to instrument’, from Latin instrumentum, from the verb instruere, from in- ‘upon, towards’ + struere ‘pile up’.