The recognition with BP artificial neural net grader shows that the recognition rate of moment features is rather high, this indicates that this method has better applicable effect.
用BP人工神经网络分类器进行识别，结果表明矩特征的识别率较高，说明该方法具有良好的应用效果。
2
He is still that kid hanging around Curtis High School practices as a seventh-grader, seeking a chance to play with the big boys.
他仍是那个在柯蒂斯高中闲荡训练的七年级小朋友，寻求着一个与大孩子们打球的机会。
3
In February 2008, Lawrence King, an eighth-grader from Oxnard, Calif., who occasionally wore high-heeled boots and makeup, was shot to death in class by another student.