This article introduces foe characteristic and advantage of inner hole welded structure, and its designing, fabricating and running in a chemical fertilizer plant.
本文介绍了“内孔焊”结构的特点、优点以及该结构在我国某化肥厂装置中的设计、制造和运行。
The optimum fertilizer kinds of the soil were decided by the sticky plastic curve characteristic.
土壤的宜肥种类可以通过粘韧曲线型的特征来判断。
The quota system of competitiveness was established in response to the characteristic of phosphate fertilizer enterprises, and the mathematic model for quantitative assessment was put forward.
本文根据磷肥企业的特点，建立了其竞争力评价体系，并在此基础上确定了定量分析的模型。
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