浸出法 meaning in English

diffusion juice
infusion process
leaching process
lixiviation process

Wood preservatives . methods of measuring losses of active ingredients and other preservative ingredients from treated timber . laboratory method for obtaining samples for analysis to measure losses by leaching into water or synthetic sea water
木材防腐剂.对已处理木材有效成分和其它防腐成分损失的测量方法.用水或合成海水浸出法对获得试样进行损失测量分析的实验室方法