请问peak-aged和ageing heat treatment是什么意思

请问peak-aged和ageing heat treatment是什么意思 ageing ageing和aging意思一样么? peak age 和aged的区别 示波器测出的amplitude 为什么和peak-peak一样,到道理只有peak-peak的一半啊 请问'Mary is at her peak. the elderly和 the aged区别 the aged 和the elderly区别 bourgeois(adj.)和middle-aged的区别? age from 和aged from 区别 middle-age和middle-aged 一样吗 Ageing Potential 怎么翻译? ageing population是什么意思 ageing什么意思 anti-ageing是什么意思 peak和pig;beach和bitch读音的区别 The world has never seen popuation ageing before.请问　ageing的词性?1.　请问ageing的词性?为什么age+ing的时候,e不去掉呢?2.　这句话是现在完成时吗?　是不是看到　before　要用现在完成时?另外再问一个句