新钢公司山上片地处距城２２公里的良山地区，拥有三所小学和一所中学，在校学生四千余人。我们于１９９７年对其生长发育状况进行了全面系统的观察，现将结果报告如下。１　对象与方法体测统计人数除去６岁以下、１６岁以上的在校正常学生的卡，共获有效卡３７９７张，男生１ New Steel Company Hill piece is located 22 kilometers away from the city of Liangshan area, with three primary schools and a secondary school, more than 4,000 students. We conducted a comprehensive and systematic review of its growth and development in 1997 and the results are reported below. 1 Subjects and methods Physical examination statistics The number of students under 6 years of age, above 16 years old to remove the normal student card, a total of 3797 valid cards, boys 1