这个句子是什么语法结构.怎么连接起来的一个整句话.

这个句子是什么语法结构.怎么连接起来的一个整句话.
teamwork means a sense of unity,of enthusiasm for common interests and responsibilities,as developed among a group of persons closely associated in a task,cause,enterprise,etc.
尤其是这块是什么结构连接的.as developed among a group of persons closely associated in a task,cause,enterprise,etc.as是定语从句吗?还是非定语从句.developed a among a在这里是干嘛的.mong在这里是干嘛的 ) 这里developed为什么是过去时态a group of persons closely associated in a task.能给我讲 只说语法.不用翻译整句话.