单词	美国 10^18
释义	同美国 10^18-- 欧洲 10^30--万兆
随便看	combination electrode combination electrode; compound electrode combination erase combination explosion combination faucet combination faults combination fire and smoke damper combination fixture combination folder combination forbidden combination frequency combination--frequency combination furnace combination fuse combination fuze combination gage combination gas combination gauge combination gear combination governor combination graduation combination grain combination header and return-bend system combination headlamp combination heater