常見例句雙語例句It is proved that the rock bolting is the most suitable supporting type for coal roadways in coal mines with high efficiency and low cost.實踐證明，錨桿支護是目前最適合煤巷的高效、經濟的支護方式。Tests show that the bolting method is simple in technology, easy for construction, lower in cost and reliable in safety with remarkable economic and social benefits .試驗證明該支護方法技術簡單，施工方便，成本低，安全可靠，具有顯著的經濟效益和社會效益。Therefore, understanding the forced mechanism of soil anchor bolting to design competence, reduce project accident and reduce project cost has directive significance at present.因此，了解土層錨桿受力機理對目前錨桿設計水平和減少工程事故及降低工程造價具有指導意義。 返回 bolting cost