The 219th ECS Meeting will be held from May 1-6, 2011. This major international conference offers a unique blend of electrochemical and solid-state science and technology; and serves as a major forum for the discussion of interdisciplinary research f

IP（INTERNATIONAL PROTECTION）防护等级是专门的工业防护等级，它将电器依其防尘、防湿气之特性加以分级。IP防护等级是由两个数字所组成，第1个数字表示电器离尘、防止外物浸入的等级，第2个数字表示电器防湿气、防水浸入的密闭程度，数字越大表示其防护等级越高