percolation test地面: the earth's surface; ground渗透: osmosis permeate; seep; perm ...试验: experiment; test; trial氦渗透试验: helium permeation test渗透试验: infiltration experiment; penetrant test; penetration test; permeability test; seepage test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:地面渗透试验，即可在微信中查询翻译
