Fidelity

保真度

bǎozhēndù

(the degree to which an electronic system accurately reproduces a given sound or image)

忠實 /忠实

zhōngshí

(faithfulness to one's duties)

忠誠 /忠诚

zhōngchéng

(faithfulness to one's duties)

忠貞 /忠贞

zhōngzhēn

(loyalty, especially to one's spouse)

逼真度

(accuracy, or exact correspondence to some given quality or fact)