dustfall meaning in Chinese

落尘；降尘
落灰

Ambient air - determination of dustfall - gravimetric method
环境空气降尘的测定重量法
Analysis of the metal element in the dustfall of the stone carving ' s surface in the yungang grottoes
云冈石窟石雕表面降尘中金属元素分析
Third , the quantity of dustfall are different in different shelter forest condition , the distribution order from maximum to minimum is wild , hedysarum scopsrium , ammopiptanthus mongolicus , 4th farm , 2th farm , 3th farm . and the quantity of dustfall in the hedysarum forest , ammopiptanthus mongolicus forest , 4th farm shelterbelt , 2th farm shelterbelt , 3th farm shelterbelt decline 61 . 64 % , 73 . 7 % , 80 . 18 % , 88 . 39 % , 78 . 48 % comparing with the wild
( 3 )不同防护林状况下，降尘量也有不同的分布，其分布的大小顺序为野外花棒沙冬青四场二场三场，花棒、沙冬青、四场、二场、三场防护林内降尘量分别比野外降尘量降低了61 . 64 、 73 . 7 、 80 . 18 、 88 . 39 、 78 . 48 。