短语词组短語Field -Bus System 現場縂線ff field -bus ff現場縂線industry field -bus 工業縂線Field Control Bus 現場縂線LON Field -Bus LON現場縂線field -bus structure 現場縂線結搆field control bus system 現場控制縂線系統multilevel field -bus 多級現場縂線 返回 field bus