声音强度对数单位；等于音强或功率比值的常用对数乘以。

A unit for measuring power. The number of nepers is the logarithm (base e) of the ratio of the measured power levels.

youdao

声音强度对数单位；等于音强或功率比值的常用对数乘以。

A unit for measuring power. The number of nepers is the logarithm (base e) of the ratio of the measured power levels.

youdao