润滑良好的闭式齿轮传动中常见的破坏形式是（ ），它一般多出现在靠近齿面节线的齿根表面上。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id < 2124474 and id<>'2124474' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24893' and id > 2124474 and id<>'2124474' order by id asc limit 5