According to pyramid with complex geometric shapes its percussive force and intrusion displacement are calculated and analyzed,so that reasonable range is obtained to determine major geometric parameters of pyramid,which provide theoretical references for further study of penetration ability and damage status of pyramid.

Study on the infestation positions of rice yellow stem borer in rice stem at earring stage and its control technologies;

Intrusion locating detection module and intrusion locating program was added in honeypot network system.

According to studies of these rock bodies in such aspects as their shapes, internal structures, contact relationships and petrochemical composition, the author has classified these rock bodies into deroofing emplacement type and injection emplacement type, and pointed out the existence of two metallogenic types related respectively to these two type.