one of the cross braces that support the rails on a railway track;
\\\"the British call a railroad tie a sleeper\\\"
造句
用作名詞(n.)
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檢測的影響也是車載探地雷達的關鍵技術之一。