I had a cadre of research assistants, and we had these pre-printed field cards.
我有一批研究助理，我们有这些预先打印的字段卡。
英语百科
Field Card
A field card is a card that displays various pieces of data depicting field conditions of interest to real-estate agents. The card is often modularized and shows abridged data for use in the field. The format of the card and the details listed follow a set template based on the nature and system of the work.