【化】 对头接缝

flat fillet

flat-bed printing machine【印刷】;flatbed press【印刷】

flat quick-connect termination【电】

making envelopes of flat form from tubular webs

flat bed truck

flat-curler with clamping bow for hairdressing

tidal flat【海洋】;wad【海洋】

flat squared picture tube【电】视;FS picture tube【电】视