Solvability theorem for the Cauchy problem to a degenerate linear evolution equation of fractional order in a Banach space is used for deriving of necessary and sufficient conditions of solvability for some arising in hydrodynamics equations systems of fractional order with respect to the time. Solutions forms for considered problems are obtained by means of functional calculus in the... https://www.cosmeticssquadets.shop/product-category/birthing-kits/