这里的through是什么词性?还是pathway through是一个整体?

Question

这里的through是什么词性?还是pathway through是一个整体?The term bus refers to an electrical pathway through which bits are transmitted between the various computer components

Answer 1

The term bus refers to an electrical pathway

 through which (through是介词)， which指an electrical pathway

bits are transmitted between the various computer components。

典型 的介词加关系代词表达， through which

追问

正常语序是什么样的?

追答

就是正常词序嘛。
只是在定语从句which bits are transmitted between the various computer components前加了through啊。

Answer 2

through which是一个整体，构成定语从句修饰先行词pathway

Answer 3

The term bus refers to an electrical pathway ,through which（定从）bits （主语从句）are transmitted between the various computer components.

through在这里是介词，介词加which引导的定语从句