Atmospheric Marine aerosol was derived from seawater gaseous substance soil dust ash fly from burning coal ash fly from burning fuel and industrial waste at dalian sea area.
结果表明，大连海域大气气溶胶物质主要来自海水、气态物、土壤尘、煤烟尘、燃油灰和工业废料。
Considering the serious waste of milled semi-rigid base in freeway overhaul, a technique on reclaimed lime-fly ash macadam used in rigid base was studied.
本文针对我国高速公路大修中半刚性基层铣刨后浪费严重的现状，研究了高速公路二灰碎石基层再生后做刚性基层的技术。
Extracting aluminum oxide from fly ash and circulating waste gas, waste water and residue is a new process of comprehensive utilization of fly ash with high extra profit and low pollution.
从粉煤灰中提取氧化铝，并作废气、废液和废渣循环及利用，是一种粉煤灰高附加值、低污染的综合利用新工艺。
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