In the 1970’s,Folland and Stein studied a family of subelliptic scalar operators L_λwhich arise naturally in the(?)_b-......

Tetraploid black locust (Robinia pseudoacacia) is a woody plant with larger leaves and richer nutritional content than n......

饲料资源缺乏一直以来都是制约中国畜牧业发展的主要因素。从长远看,常规饲料已不能维持中国畜牧业的可持续发展,开发新的饲料资源......

本试验研究了在不同非纤维性碳水化合物/中性洗涤纤维（NFC/NDF）比饲粮条件下诱发奶山羊亚急性瘤胃酸中毒（subacute rum inal acidosis......

An investigation was conducted to evaluate the nutrient level of grazing livestock as influenced by the sampling periods......