Thus it is possible to obtain products ranging from gaseous materials taken off the top of the distillation column to a heavy residue or “bottom”, which is usually nonvolatile, with correspondingly lighter materials taken off at intermediate points.
Thus it is possible to obtain products ranging from gaseous materials taken off the top of the distillation column to a heavy residue or “bottom”, which is usually nonvolatile, with correspondingly lighter materials taken off at intermediate points.
由此，我们有可能获得石油产品，这些产品包括从蒸馏塔顶部得到的气态物质，包括比重较大的渣油或称“残渣”(一般而言挥发性较差)，以及从蒸馏塔中部得到的比重较小的其他相应物质。