dustfall 中文意思是什麼
dustfall
解釋
落塵；降塵-
Ambient air - determination of dustfall - gravimetric method
環境空氣降塵的測定重量法 -
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 ）不同防護林狀況下，降塵量也有不同的分佈，其分佈的大小順序為野外花棒沙冬青四場二場三場，花棒、沙冬青、四場、二場、三場防護林內降塵量分別比野外降塵量降低了61 . 64 、 73 . 7 、 80 . 18 、 88 . 39 、 78 . 48 。 -
Analysis of the metal element in the dustfall of the stone carving ' s surface in the yungang grottoes
雲岡石窟石雕表面降塵中金屬元素分析
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