fine-tune
细颗粒物
fine particles，PM2.5
缩略语：PM2.5
细颗粒物 fine particles，PM2.5(大气科学)
悬浮在空气中，粒径(空气动力学直径)小于等于2.5微米的颗粒物。
悬浮在空气中，粒径(空气动力学直径)小于等于2.5微米的颗粒物。
相关词条
coarse-fine control
fine-stemmed dendrobium
fine linen
fine machining【机】;finish【机】;finishing【机】
fine coke
fine steel needle
fat meat, fine grain, and strong flavors