The properties, production process and research progress of allantoin are introduced and application of the products is reviewed. The developing prospect is forecasted.
介绍了尿囊素产品的性能、生产工艺及研究进展，并对产品的应用进行了概述，对发展前景进行了展望。
The paper flash spinning nonwovens technology process is introduced, it puts stress on ap-plication present and developing prospect of flash spinning nonwovens.
简要地介绍了闪蒸法非织造布的生产工艺技术，重点叙述了闪蒸法非织造布的应用现状及发展前景。
Specific analysis of developing prospect and application of clutch type spiral press with heavy duty (25mn or more) has been done to promote application spread in die forging process.
针对大吨位离合器式螺旋压力机(主要指吨位在25 MN以上的压力机)的开发前景及应用情况，作出了一些具体分析，以推动该类设备在模锻工艺上的广泛应用。
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