Effects of initial carbon source concentration and nitrogen source concentration on D-ribose fermentation and feeding process in flask.
初始碳氮源浓度对d -核糖发酵的影响及摇瓶补料工艺。
The zinc smelting furnace with automatic feeding system has functions of automatic, timing and quantitative control on its feeding process.
锌熔炼炉自动投料系统可实现对熔炼炉投料的自动、定时、定量控制。
Surface hardness, hardness along the depth and the degree of layer looseness are all Superioors than the conventional drop-feeding process with methanol and ammonia.
表层硬度，沿深度方面的硬度变化和表层的疏松等级都比常规的通氨滴醇法优越。
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