What Is a Trackhoe?

Windmills are wind-powered machines that do not require fuel and use wind as an energy source. Early wind turbines were also called windmills. Modern wind turbines mostly refer to wind turbines for power generation, and there are also used for water lifting irrigation.

windmill

(Mechanical device driven by wind)

Windmills are windmills

Wind energy resources are clean, renewable, safe, clean, and rich in resources. They are inexhaustible. They are a permanent, large number of local resources that can provide us with a long-term stable energy supply. Wind power is the most mature and regulated technology in the field of new energy.

Fold the prepared paper diagonally, then fold it again, and unfold it; then use scissors to cut the crease (that is, the two diagonal lines), and do not cut it completely, but cut it to the dot The position shown; then fold the four corners of the cut to the center of the paper respectively in the direction of the arrow in the figure, and fix it with a glue stick to prevent it from suddenly falling apart when playing. Fix the sticky prototype with a tack on a bamboo stick or small stick and you're done.

Tip: Since both sides are easy to fall out, you can use rubber bands to fix both sides. ^[2]