求翻译：本文对国内中学生成就动机的研究进行了回顾，以往的研究发现中学生追求成功的动机高于避免失败的动机，成就动机存在着年级、性别、学校类型以及城乡四个方面的差异。是什么意思？

Conduct a review of the domestic students' achievement motivation, previous studies found that the motivation for high school students to pursue higher than the motive to avoid failure, achievement motivation, there are differences in grade, gender, school type, as well as urban and rural four.

This article in the national high school students achievement motivation of the research carried out a review of the past, students study found that the motivation for success than failure in achievement motivation, and motivation there is a grade school types, gender, and urban and rural difference

This article has carried on the review to the domestic middle-school student incentives to achievement research, the former research discovered the middle-school student pursues the motive which the successful motive is higher than avoids being defeated, the incentives to achievement has the grade,

This article studies on the achievement motive of middle school students in China were recalled, previous studies found that students ' motivation to pursue success motivation than avoiding failure, grade achievement motivation, gender, type of school, and rural-urban differences in four.

正在翻译，请等待...