as做關系代詞，除了引導非限定性定語從句外，還用於類似It is expected （that ）中，把it換成as作主語。詳細點吧。as 與 which 引導非限制性定語從句的區別:
as 與 which 引導非限制性定語從句時, 它們的先行詞都可以是整個句子,
區別 在於:
① as 引導的從句位置靈活,可以放在主句的前, 中和後, 而 which 引導的從句只
能放在主句之後.
② as 常被譯為 “正如 … …”, 而 which 常被譯為 “ 這壹點\這”
Taiwan is part of China, as is known to all.
Mary didn’t pass the driving test, which made her very sad.
註意: as 常用於以下結構:
as + 主語 + see \ know \ expect \ imagine \ suppose.
as be seen \ known \ expected \ imagined \ supposed.
as often happens.
as has been said before.
as is often the case.
妳的句子就屬於這裏第二類句型。
也翻譯壹下吧：
大家有有機會欣賞了：這壹新發明的套件裝配上有其優越性，有壹個金屬隔間，壹個金屬塗層的塑料隔間，或者壹個除了保存空氣以外，還能保存像氬壹樣的惰性氣體的隔間，裝配上有相對優越的穩定值和利用價值，同時結構堅固耐用。
花了壹小時了，加點分哦。
當然，還可追問