论述了以相转移催化剂催化合成邻硝基茴香醚的新方法.The process of synthesizing o - nitroanisole by using phase - transfer catalyst was described.丁化羟基茴香醚: 一种白色蜡状的苯酚抗氧化剂, CHO, 用于保存脂肪和油, 尤指在食物中.BHa: a white, waxy phenolic antioxidant, CHO, used to p...
Acute myocardial infarction ( AMI ) is one of the most common cardiovascular emergencies.急性心肌梗死 ( AMI ) 是人类最常见的心血管急症之一.An improved AMI code being suitable for telemetry system is proposed.提出了一种适于遥测系统中使用的改进型AMI码.AMI gener...