常見例句雙語例句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(chǎn)生的副產(chǎn)品。The structure of Yangzhou coal and products in co-processing of coal and tar were analysed by means of NMR and FTIR. Thestructural parameters were calculated.采用核磁共振和紅外光譜對克州煙煤及與煤焦油共處理產(chǎn)物進(jìn)行了結(jié)構(gòu)分析，并求算了其結(jié)構(gòu)參數(shù)。 返回 coal-tar products