20 one-day-old Tianfu ducklings were fed on a natural diet deficient in phosphorus(Ca 0.80%,P 0.366%)for three weeks and examined for signs and lesions.Signs b
The analysis method of the triple test cross design has been discussed carefully form the two factor experiment design and the genetic models of additive-domina
Based on dynamic analysis for the Front Wheel Assist(FWA) tractor,a calculating and analysing method on selecting the optimum coefficient of inharmonious motion