primary fossil 中文意思是什麼
primary fossil
解釋
原生化石-
During the primary research work of chengjiang biota, the paleontologists had an idea that the bivalved arthropod kunmingella douvilleiyas the dominant species because they found that eighty percent of the fossils they excavated in chengjiang fossil lagerstatte were kunmingella douvillei. and they also found that naraoia longicaudata, naraoia spinosa and isoxys auritus which belong to arthropoda were the sub - dominant species
在澄江生物群研究初期，雙瓣殼節肢動物朵氏昆明蟲（ kunmingelladouvillei ）化石數量占澄江化石庫中所有化石產量的百分之八十，因而古生物學家曾認為kunmingelladouvillei是該庫的優勢種。 -
How to measure exactly the coal mass of pulverizer in fossil power plant ? it is one of primary causes that the efficiency of milling control is low and the automation is difficult to running. in this paper a method of solving uncertainty problem - evidential theory was studied principally from the view of the multiple sensor information fusion
火電廠中鋼球磨煤機筒內存煤量的測量問題一直是制粉控制效率低和自動控制難以投入運行的主要原因之一，本文從多傳感器信息融合的角度出發，重點研究了一種解決不確定性問題的有力方法? ?證據理論方法。 -
Keywords ： fossil power plant ； primary frequency control ； coordinate control system ； stability
關鍵詞：火電機組；一次調頻；協調控制系統；穩定性 -
We would concentrate on using energy more efficiently and on substituting noncarbon renewable or nuclear energy sources for fossil fuel ( coal, oil and natural gas ? the primary sources of manmade atmospheric carbon dioxide )
我們應該致力於將能源做更有效的運用，並以無碳再生能源或核能取代石化燃料（燃煤、石油與天然氣，是大氣中人造二氧化碳的主要來源） 。
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