zero-setting device 置零装置

initial zero-setting device 初始置零装置

automatic zero-setting device 自动置零装置 ; 自动调零装置

non-automatic zero-setting device 非自动置零装置

semi-automatic zero-setting device 半自动置零装置

Z zero-setting device 置零装置

automatic systemsd zero-setting device 主动置零装备

non-automatic systemsd zero-setting device 非主动置零装备

semi-automatic systemsd zero-setting device 半主动置零装备

initiing zero-setting device 初始置零装备