模拟放大、工程设计、设备制造和材料性能的问题，是我国合成氨工业技术进步缓慢的主要原因。
Problems existed in simulation scale-up, engineering design, equipment manufacture and materials properties are main causes for the slow technical progress of the ammonia industry in China.
介绍锦西大化肥装置通过技术改造、优化操作，加快合成氨装置恢复开车速度，缩短开车时间的经验。
In Jinxi Large fertilizer plant, through technical modification and operation optimization, restart up procedure of ammonia plant is speeded up.
分析了波纹管技术在合成氨换热领域运用的可行性，介绍了有关注意事项。
The application feasibility of bellows technology in the heat exchange of synthetic ammonia was analysed, and some notices were presented.
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