从句必须是完整的句子吗?

问题描述:

从句必须是完整的句子吗?
比如下边这句:(英是本人译)
统意义上的双码流是指采用一路高码率用于本地高清存储,如D1编码,另一路低码率的码流用于网络传输,如CIF编码
Traditional dual stream means that one for local storing (e.g.D1 encoding) and the other for network transmission.

从句中并列两句中的前面部分须有动词,后面可省略,即为:Traditional dual stream means that one is for local storing (e.g.D1 encoding) and the other for network transmission.