On the modern battlefield, remotely setting fuze is an effective measure that must be taken aiming at low distance anti missile and anti helicopter, namely, while transmitting the function time from the launching platform into the fuze at muzzle exit is the key technique of remotely setting a fuze.

Generally,coaxial coil is required to be mounted at the muzzle in inductive setting design and data is transmitted when the fuze is passing through the coil.

Computer aided design of the blast-hole arrangement plan in heading tunnel;

According to the ore nature property and actual mining condition in the mine,the problem of high powder ore ratio is solved by modifying the blasting parameter and the blast-hole arrangement,the lump ore ratio and the ore utilization ratio are increased,thus,the mining cost is reduced and economic profit of the mine is increased.