By studying the root tip cells preparations of common wheat which were stored in 1992—2001,we conclude that it is closely related between the abnormal division index of the wheat root tip cell and the wheat seeds storage time under the room temperature.

Analysis and countermeasures of abnormal fracturing mechanism;

Cause analysis of frame abnormal rupture of heavy dump truck;

With a simple multi-phase mixture model proposed by TANG Zhi-Ping et al earlier,we have studied the propagation of the elastic and plastic waves as well as the macroscopic phase boundary in the targets by characteristic line method,and the mechanism of the abnormal spall phenomena mentioned above are explained theoretically.