impervious cap rock不: a block of wood渗透: osmosis permeate; seep; perm ...盖层: overlying strata; cap rock; ...半不渗透: semitight不渗透边界: impermeable barrier; impermeable boundary; no-flow boundary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:不渗透盖层，即可在微信中查询翻译
