n.枕木
The other key technique in using an on-train GPR deals with the estimation and elimination of the influence of reinforcing steel bar in the cement crosstie. 如何確定和消除枕木中的條狀鋼筋對地下目標(biāo)檢測的影響也是車載探地雷達(dá)的關(guān)鍵技術(shù)之一。
