词汇	frequency indicator
释义	frequency indicator 示频器,频率计
随便看	cast iron flange valve cast iron flat cast iron flush cistern cast iron foot valve cast iron for hydraulic equipment Cast-iron frame cast iron frame for washing basin cast iron front cast-iron front cast iron furniture cast iron gas welding rod cast iron gate valve cast iron gate valve,flanged cast iron gate valve,screwed Cast-iron gilled tube air heater cast-irongilled tubeeconomizer cast iron gilled tube economizer cast-iron gilled tube economizer cast iron globe valve cast iron globe valve,screwed cast iron grate cast-iron grating cast-iron gray cast iron growth cast-iron growth