The Tort Liability Act of People\'s Republic of China should follow the style of The General Principle of Civil Law which admits cessation of infringements,removal of obstacles,elimination of dangers and return of property as the methods to bear tort liability besides compensation for damages.

The spin eccentricity of the ball rotor of a fuze or the bias of the center of the figure of the ball rotor about the spin axis of a projectile during arming is an important parameter in analysis and calculation of the working character for the ball rotor of a fuze.

The aims of study and analysis on fuze ball rotor structure are delaying the arming time, decreasing the spread of the arming time and enhancing the reliability of the fuze, so that this typical fuze structure which is simple can be used better than before and applied to a large-caliber spinning projectile.