常見例句雙語例句Old shaped furnaces for production coke cannot regain invaluable by-products;他們生產焦炭的老式爐不能提取有價值的副產品。Ammonia, coal tar and coke are all by-products obtained in the manufacture of the coal gas.氨水，煤焦油和焦煤都是煤氣制造過程中產生的副產品。In the future increasing quantities of coal will be converted into gas, coke and other by-products .將來，煤將越來越多地用來制造煤氣、焦炭和其它副產品。 返回 coke by-product