求翻译：由于本课题国内外研究报道较少，在实验中找不到合适的筛选产酸较低酵母的筛子，因此在初筛时耗费了大量时间在挑选菌株进行低温发酵实验上，筛选效率低是什么意思？

As the subject of few studies at home and abroad, in the experiment could not find a suitable screening low acid yeast screen, so when you spend a lot of time screening in the selection of strains of low-temperature fermentation experiments, the screening efficiency is low

Since the topic study at home and abroad, in the experiment reported than cannot find a suitable filter outputs low acid yeast for screening at the time of the initial sieve, therefore when a large amount of time spent in low-temperature fermentation experiments conducted on selected strains, the fi

Because this topic domestic and foreign research report are few, in the experiment cannot find appropriate screening to produce the acid low yeast the screen, therefore initially is sieving time cost the massive time to carry on at the low temperature fermentation test in the choice strain, the scre

Because of this subject at home and abroad study reported less, not found in the experimental low acid-producing yeast by the appropriate filter sieve, therefore when screening spend most time on the low temperature fermentation experiment in the selection of strains and low screening efficiency

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