例句 /

Abstract: To predict water-gushing is one of the principal problems faced in the surveying and designing extra-long tunnels.

Abstract: To predict water-gushing is one of the principal problems faced in the surveying and designing extra-long tunnels.

文摘:涌水预测是特长超深隧道勘测设计及施工中面临的重要问题之一。