The urinary concentrations of hydroxyproline (HYPRO)and 3-methyl histidine (3-MEH1S ) were determined in 16 Chinese-Holstein cows. The objectives of the experiment
It focuses on that students must be developed the ability to solve the practical problem by building the mathematics models and the ability to combine the theor
According to the method of water balance,the parameters of groundwater resouce of Jian San Jiang area have been calculated in the paper. At the same time,the qu