【电】 左向道岔

on the left-hand side of

left-hand lay wire rope

left-hand wife

left-hand threaded nut

left side【科技】;left-hand side【科技】

left-hand two-flute drill

left bracket【计】;left parenthesis【计】;left-hand bracket【计】

left-hand airscrew【航】;left-hand propeller【航】