sintering coal

例句：

1. 1. The factory uses sintering coal to produce steel.
   这家工厂使用烧结煤来生产钢铁。
2. 2. The coal sintering process is crucial for reducing emissions.
   煤炭烧结过程对于减少排放至关重要。
3. 3.Coal sintering is a complex process that requires precise control of temperature and pressure.
   煤炭烧结是一个复杂的过程，需要精确控制温度和压力。