The influence of extrusion on activity of soybean urease was studied under different temperatures, different steam amounts and different pressure ring diameters.
研究在不同温度、不同蒸汽添加量以及不同的压力环直径条件下，挤压膨化对大豆中脲酶活性的影响。
2
It confirms that tempering quality after being circle checked is the main cause for deformation of the steam seal ring made by rolling.
通过分析，确认校圆后的回火质量是钢板卷制汽封圈产生变形的主要原因。
3
From 1993, the reconstruction of low pressure cylinder sealing began to conduct. The floating ring seal are changed into steam jamming seal. The applied effect is good.