例句與造句

1. Stand - alone scanner mainframes are designed to allow system developers to plug switching cards with relays into slots in the mainframe , which supplies the relay drive current and various controls for the relays
   利用獨立掃描儀主機，系統(tǒng)設(shè)計者可以將含繼電器的開關(guān)卡插入到主機的插槽中，主機為繼電器提供驅(qū)動電流和各種控制。
2. It's difficult to find plugging switch in a sentence. 用plugging switch造句挺難的