| 释义 |
Aero-anion
基本例句
空气负离子¹⁰⁰
The research reviews the researches on ecotourism development for the aero anion resources, measures and analyses aero anion density of Beishan National Forest Park in Qinghai province.摘要回顾空气负离子资源生态旅游开发的研究进展，并测定和分析了青海非山国家森林公园的空气负离子浓度。 |