pre leaching operationpre leaching treatment浸出: infusion; leach; lixiviate前: front处理: deal or cope with浸出前溶液: head solution前处理: initial treatment; preproce ing; preprocessing; pretreatment下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:浸出前处理，即可在微信中查询翻译
