dustfall jar 降尘瓶
Dustfall Robes 落尘长袍
dustfall agent 降尘剂
monthly dustfall 月降尘量
dustfall sampler 降尘采样器
regional dustfall 区域降尘
dustfall monitoring 降尘监测
atmospheric dustfall 大气降尘
Dustfall in Spring 春季降尘
Cadmium and Lead in dustfall is harmful to environment and human health.
大气降尘中所含的镉和铅都对环境和人体健康造成危害。
The result showed that the natural dustfall accounted for 54% of the total dust amount yearly.
经分析，兰州城区自然降尘量占年降尘量的54%。
The dustfall samples collected under typical dust and non-dust weather were made particle size analysis in Lanzhou.
选择兰州市典型沙尘天气和非沙尘天气收集两类降尘，并对其进行粒度测定。
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