dust precipitation 中文意思是什麼

dust precipitation 解釋
煤塵沉降
  • dust : n 1 塵，灰塵，塵土，塵埃。2 〈英國〉垃圾，廢品；灰燼。3 〈口語〉金粉；粉末，粉劑；花粉。4 〈詩〉...
  • precipitation : n. 1. 猛然摔下，落下。2. 猛沖；急躁，輕率，魯莽。3. 【化學】沉澱（作用）；降雨（量）；（雨、雪等的）降落。
  1. Research and productive practice on recovering gold from pregnant solution highly containing cu, pb, zn by zinc dust precipitation

    從多硫化物浸金貴液和石硫合劑浸金貴液中萃取金的研究
  2. ( 4 ) 5000 - 3100ab. r, through comprehensive analysis of these proxy climatic substitute indexes indicates : this was another warmth and humidity period in which the temperature risen and the precipitation decreased, but the warmth and humidity were not as proper as those in the best period mentioned above ; the forest vegetation may recovered ; there were flood sediments in the dust in the early - middle stage of the period ; in the early stage was longshan culture, and in the early - middle stage the human culture developed and it entered into period of xiashang civilization

    （ 4 ） 5000 3100ab p ，綜合多氣候代用指標的分析結果表明：本期氣候表現為溫度升高、降水增大的變化，但溫濕程度總體上不如前面的最適宜期；植被可能恢復到森林景觀；在早中期粉塵沉積過程中有洪流沉積。早期為本區的龍山文化期；期間的洪水事件可能進一步強化了人地關系，並進而推動了本區人類文化的發展而進入夏商人類文明時期。
  3. Progress in dust collection by electrostatic precipitation in view of gaseous pollutants removal

    防靜電物料的衰減特性研究粉塵爆炸與靜電
  4. The thesis draws the following conclusion : ( 1 ) 11500 - 8500ab. p., through comprehensive analysis of these proxy climatic substitute indexes reveals : this was a period in which the temperature risen and the precipitation increased, but it was mainly still dry and cold ; the vegetation was prairie or forest prairie ; there were flood deposits in the dust sediments of late stage ; and it was the shifting period from the new stone age to the old stone age

    主要得到以下幾方面的認識： （ 1 ） 11500 8500ab . p . ，綜合多氣候代用指標分析的結果表明：本期氣候表現為溫度升高、降水增大的好轉時期，但總體上仍以乾冷為主；結合很少發現較粗顆粒木炭屑的情況推斷當時的植被是草原或森林草原；研究發現在後期粉塵沉積過程中有洪流沉積。
  5. Eight heavy metal elements are measured under atmospheric background and dust - sandstorm weather conditions. element - concentration under dust and sand storm is as higher 3. 43 - 6. 30 times as background. six heavy metal elements in precipitation are also analysed and its sharp variation geographically are found

    分析了大氣背景和沙塵天氣下的8種重金屬元素濃度和降水中的6種重金屬元素濃度，結果表明，沙塵天氣重金屬元素濃度是背景值的3 . 43 - 6 . 30倍，降水中6種重金屬元素濃度的地理分佈存在不均勻性
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