Residue has higher conversion, tar, gas volumeyield and less water yield than parent coal.
残渣与父本煤相比有更高的转化率、焦油收率和热解气体积收率，而热解水收率较低。
2
Research has shown that Tanco could reprocess the by-product of potassium chloride use to yield a crop fertilizer, leaving a relatively small volume of waste for disposal.
Oil seems to be putting in a bottom on strong volume, no one is left to buy any more negative real-yield securities the Treasury is issuing, and gold has started looking very bullish.