incline的用法

BASIC AND STRUCTURED PROGRAMMING

Even with the new second-generation programming languages, such as FORTRAN and COBOL, programming remained the domain of mathematically and technically inclined people.

上面這句話我大概猜得出來含意因該是
"即使是第二代程式語言,FORTRAN和COBOL,仍被認為是數學或技術性領域的東西"

但原文我有兩個地方不太懂

(1)inclined在這邊的含意是什麼?我一直沒辦法把字典裡的解釋(傾向)融入這句話中

(2)of 後面為何加副詞? 副詞用來修飾動詞或形容詞,所以在此處是修飾 inclined???