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。
The utility model discloses a negative pressure feeding process for tobacco leaves and equipment thereof, which belong to the technical field of cigarettes.
本实用新型公开了烟叶的负压加料工艺及其设备，属于卷烟技术 领域。
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