ประโยคภาษาจีน : 中文句子 |
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rú 如 xiàng shàng 向上 bèng sòng 泵送 zé 则 bì xū 必须 xiān 先 guān bì 关闭 jié zhǐ fá 截止阀 fáng zhǐ 防止 tóng 砼 dào liú 倒流 rán hòu 然后 chāi xià 拆下 chū liào 出料 guǎn 管 |
Such as pumping up you must turn off valve to prevent backflow of concrete, then removed the feed tube. |