WPS 110 · Weld Drawing and WPSSession 2 · Hour 1 · Arrow and referenceInstructor cue 어느 쪽. 어느 이음.90 minNow Open · 5 min left · next Demo한ENScriptBodyClearHour 1Arrow and referenceHour 2Follow Arrow and referenceHour 3Your turn · Arrow and referenceHour 4Check Arrow and referenceThis browser cannot play the film.CheckWhich side. Which joint. Week 2: name, order, result. Then Which side. Which joint.