Although the temperature has gradually cooled in the autumn and the water temperature has drop…
Pregnant women are in a special period. Care should be taken when…
January 7, 2014, is committed to leading electronic components distributors …
1. Monosaccharide fermentation test
(1) Experimental principle
In monosacch…
Bean curd residue is a good feed for pigs, but a large number of pigs are simply used to f…