我想请教一个问题,这个句子里面的as引导是什么从句?能否帮忙分析一下这个句子? Stuides have found obesity is associated with impairments in cognitive functioning,as assigned by a range of learning and memory tests.
曹老师您好,高中教材上有这样一句话:Over the centuries, further trading allowed more exploration of the regions to the west of China, as
recorded in Du Huan's Record of My Travels in the eighth century. 这里的as 引导的从句如何理解呢?