常見(jiàn)例句雙語(yǔ)例句Watch out! You almost fell into the drainage hole.小心！你差點(diǎn)掉到下水道裡去了。blog.sina.com.cnAccording to seepage theory, the gas seepage from drainage hole along coal seam is studied by means of electrical simulation experiment.根據(jù)滲流理論，本文對(duì)沿層抽放鑽孔周圍的瓦斯?jié)B流問(wèn)題進(jìn)行了電模擬實(shí)騐研究。118.145.16.223Then using the superposition principle of well group, the analytic theory of single drainage hole is spread to multiple drainage holes in the element.然後，應(yīng)用井群的曡加原理，將單個(gè)排水孔的解析理論推廣到單元內(nèi)多個(gè)排水孔的情況。 返回 drainage hole