cephalosporins的音标：cephalosporins的英式发音音标为：[sefələʊs'pɔ:rɪnz]cephalosporins的美式发音音标为：[sefəloʊs'pɔrɪnz]...

Gram negative bacilli resistant to cephalosporins were between 17.4 % to 55.5 %.革兰阴性杆菌对三代头孢菌素的耐药在17.4%～55. 5%之间.Successfully developed Side - chains for cephalosporins has also resulted in good market reply.目前公司开发的系列头孢侧链...

先锋霉素族抗菌素...