modulus [ˈmɒdjʊləs] (Mathematics)(数) (pl. moduli -lʌɪ, -liː)
another term for absolute value 同 absolute value ■the positive square root of the sum of the squares of the real and imaginary parts of a complex number 模数
a constant factor or ratio 模 ■a constant indicating the relation between a physical effect and the force producing it 模
a number used as a divisor for considering numbers in sets, numbers being considered congruent when giving the same remainder when divided by a particular modulus 模数
语源
mid 16th cent. (denoting an architectural unit of length): from Latin, literally measure', diminutive of modus