pretty much a fast dl with a fast triple ext..
A clean or snatch are variations of Olympic Lifts. There is much more than just a triple extention involved in a clean or snatch. Yes, a triple extention is involved, but you must also continue the acceleration of the bar with your upperbody and then catch the bar, either above your head as in a snacth or around your clavicle (but not on it) in a clean. During both of these lifts it is very important to keep the bar as close to the center of mass as possible.
Snatch:
Stand over the barbell with the balls of your feet under the bar at hip width or so apart. Squat down and grab the bar with a wide over hand grip. Position the shoulders over the bar with the back arched to a small degree. Arms are straight with elbows pointed along the bar.
Pull the bar up off the floor by extending the hips and knees. When the bar passes the knees shrug your shoulders while keeping the bar as close to the COM as possible. As the bar passes your thighs, jump upward extending the body (triple extention). Shrug the shoulders and pull the bar up with your arms allowing the elbows to pull up to the sides, keeping them over the bar as long as possible. "Slide" under the bar. Catch the bar at arms length while squating. Stand up.
The clean is similar to the snatch, but instead of thrusting it overhead, you squat and catch it at clavicle level. It is important to keep the elbows slightly out instead of on your sides.
If you've never learned the Olympic lifts, I would suggest taking your time and progressing the loads relatively slowly. You may even want to start out with a length of PVC pipe or a very light bar and keep your form perfect.
If you want a progression of learning the Olympic lifts, we may be able to help.