The composition of fossil fuels varies with source, type, and degree of refinement . 礦物燃料的成分隨來源、種類和精選程度而變化。
About 90 per cent of the energy used in the united states is derived from the fossil fuels . 美國使用的能量,大約90來源于化石燃料。
How long can we continue to supplement agroecosystems with energy derived from declining fossil fuel supplies ? 由于礦物燃料供應量下降,我們供應農(nóng)業(yè)生態(tài)系統(tǒng)能量能持續(xù)多久?
Most of the energy sources used in our current technology are the fossil fuels that have been stored in the earth's crust for many centuries . 當代技術(shù)領(lǐng)域所使用的大部分能源是已經(jīng)貯存在地殼內(nèi)許多世紀的礦物燃料。
Fossil fuel plant feedwater control system - drum type 火電廠給水控制系統(tǒng).滾筒式