常見(jiàn)例句雙語(yǔ)例句As a byproduct of crude refining process petroleum coke features a low ash content, moderate volatility and a high heating value.石油焦是煉油工藝的副產(chǎn)品，具有低灰分、一定揮發(fā)份和高熱值的特性。Petroleum coke is a byproduct of petrochemical industry in China; its marketing mode, however, remains what it was under the planned economy.石油焦產(chǎn)品作為中國(guó)石化企業(yè)的副產(chǎn)品，目前其銷售模式還延續(xù)了計(jì)劃經(jīng)濟(jì)時(shí)代的印記。 返回 byproduct coke