Effect of Alkali on β-elimination Reaction
zhou yuanlin (southwest university of science and technology; mianyang; 621000); chen xiaojun(the first middle school ; mianyang; 621000)
The Pathogeny of Left Displaced Abomasum of Milk Cow
liu hongyi; he hongzhi(southwest university of science and technology; mianyang; 621002); lin chengyong(mianyang research institute of agricultural science and technology; sichuan; 621002)