| ประโยคภาษาจีน : 中文句子 | 
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|  duì对  yǒng píng永平  tóng kuàng铜矿  lù tiān露天  zhuàn转  dì xià地下  kāi cǎi开采  gōng chéng工程  yǒu guān有关  wèn tí问题  jìn xíng进行  le了  tàn tǎo探讨  wèi为  xià yí bù下一步  gōng zuò工作  tí gōng提供  cān kǎo参考 | 
| Some problems about mining engineering from open-pit to underground mine are discussed, which will provide reference for the future work. |