常見(jiàn)例句雙語(yǔ)例句The disadvantages are mainly high equipment costs and plugging of the lines by sediment, salt encrustation, or algae.缺點(diǎn)主要是設(shè)備費(fèi)用高，琯道易被泥沙、鹽分結(jié)晶或藻類(lèi)植物堵塞。blog.sina.com.cn 返回 salt encrustation