根據句子結構，本句是主從復合句，即定語從句+ 主句。下面詳述如下：
非限制性定語從句As is vividly depicted in the left part of the drawing (As是關系代詞，指代整個主句，在定語從句中作主語，vividly是方式狀語，is depicted是復合謂語，in the left part of the drawing是地點狀語) + 主句(倒裝句型) thirty years ago, there stood a delicate mother, holding the tiny hand of a lovely girl ( thirty years ago 是 時間狀語，there是引導詞，stood 是主句謂語，delicate是定語，mother是主句的主語，holding the tiny hand of a lovely girl是現在分詞短語作伴隨或方式狀語。 )
關系代詞as可以引導限制性定語從句，也可以引導非限制性定語從句，可以在定語從句中作主語、賓語、表語。它引導非限制性定語從句時，它的先行詞還可以是整個句子。as引導的非限制性定語從句有三個位置：句首、句中和句尾，並且都要用逗號跟主句隔開。例如：
Such books as were mentioned yesterday have been sold out. (as作主語)
This is the same knife as I lost yesterday. (as作賓語)
He is not the same person as he was.(as作表語)
I smoke as expensive a cigar as I can afford. (as作賓語)
As is well known, China is famous for the Great Wall = China, as is well known, is famous for the Great Wall = China is famous for the Great Wall, as is well known. (as作主語，其先行詞是整個主句)
He is very careful, as his works show. (as作賓語)