elementary characters的用法和樣例：
例句
- Unobtrusiveness and robustness are two elementary characteristics of watermarking technology.
不可見(jiàn)性和魯棒性是數字水印的兩個(gè)基本特征。 - The paper discusses the essence characters of digital libraries and the technology problems faced during constructing digital libraries.
論述了數字圖書(shū)館的基本特征以及建設數字圖書(shū)館所面臨的技術(shù)問(wèn)題。
