A little part is from coal-measures abiogenic gas and from internal abiogenic gas or is known as mantle-derived gas, inorganic matter accounts for21.
少部分来自于煤系地层的无机成因气和深层的无机成因气或者叫幔源气，无机组分在21。
2
Metals and other inorganic materials that do not turn into gas fall to the bottom of the chamber as molten slag.
金属和其他不能变成气体的无机材料，则会作为熔渣落到箱底。
3
Metals and other inorganic materials that do not turn into gas fall to the bottom of the chamber as molten slag. Once it has cooled, this slag can be used to make bricks or to pave roads.