zone of semi-coking

例句：

1. 1. The zone of semi-coking is where the coal is most likely to burn.
   半焦区是煤炭最有可能燃烧的地方。
2. 2. The process of semi-coking involves heating the coal and allowing it to decompose.
   半焦化过程涉及加热煤炭并允许其分解。
3. 3. In the zone of semi-coking, the coal is at a critical temperature where it can be easily converted into gas.
   在半焦区内，煤炭处于一个临界温度，此时它很容易被转化为气体。