n. a person or thing equal to another in value or measure or force or effect or significance etc
n. the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen
s. being essentially equal to something
n. 同等物, 等价物, 相等物
a. 相等的, 相当的, 同意义的
[计] 等价的