synthetic ammonia的用法和樣例：
例句
- Operation and trouble shooting in the case of trouble of cold box,which is a core equipment in Braun ammonia processes introduced.
介紹在布朗合成氨工藝中占核心地位的冷箱處於故障情況下的生產方式和解決措施。 - The ammonia synthesis catalyst is activated by circulating syngas through the catalyst beds under slowly increasing temperature.
這是關於合成氨催化劑升溫活化的內容。
