A second, more serious question is whether PAEs engage in asymmetric warfare.

第二个更为严肃的问题是，专利主张实体是否发起了不对称战争。

The SEM findings revealed the different etching patterns caused by acid etching and PAEs.

各组的扫描电镜分别揭示了各自不同的酸蚀形貌。

The degradation of six PAEs in the sludge conformed to a first-order reaction kinetic equation.

其好氧降解过程可用一级动力学模型描述；

London mayor Boris Johnson passes the Olympic Flag to Rio de Janeiro Mayor Eduardo Paes, helped by IOC president Jacques Rogge.

伦敦市长鲍里斯·约翰逊将奥运五环旗帜交给里约热内卢市长。