the technology sector is mechanical. the purpose is the protection of grapes and other crops from hail.it sliding a clear transparent plastic sheeting on the guide of wire on which design with wheels; an electrical impulse or electronic sets in motion a moped electric.the size of the canvas, plastic reinforced the division of plot into rectangles or squares. the electrical circuit is wrapped by insulating material.the current may be alternating. the u-turn, hail, lapilli avoided, is obtained by inverting the magnetic induction, and the induced current. the switch is a mechanical or electronic.
展开▼
