指令系统 zhǐlìngxìtǒng instruction set Origin Definitions Defs Strokes Stroke Words Sentences Sents zhǐlìngxìtǒng instruction set 指令 zhǐlìng command a computer command or instruction that triggers a specific operation in a program系统 系統 xìtǒng noun system A whole composed of parts that work together to perform a function or achieve a goal; a series or group of related things forming a complex whole.zhǐlìngxìtǒng command system 指令 zhǐlìng noun instruction an order, command, or directive issued by a superior系统 系統 xìtǒng noun system A whole composed of parts that work together to perform a function or achieve a goal; a series or group of related things forming a complex whole.