单词	设置－清除
释义	设置－清除set-clear，S-C
随便看	directional automatic realignment of trajectory directional beacon directional beam directional bezcon directional blasting directional bonding directional broadcasting directional characteristic directional characteristics directional coil directional comparison directional comparison protection directional comparison relay directional comparison system directional component directional confusion directional control directional control circuit directional control valve directional control valve (hydraulic) directional control valve (pneumatic) directional control valve，selector directional cooling directional--cooling directional correlation