Step Tread & Riser 踏步与立板
step tread plate 脚蹬板
step tread board rubber cover 踏板橡皮面
foot step tread 行走或奔跑时脚的动作
rear end of step tread 梯级踏面后
former end of step tread 梯级踏面前缘
The measuring of geometrical profile and tread defects of wheel set is an important step for the safety of vehicle running.
车辆轮对尺寸参数和踏面缺陷的检测是保障车辆运行安全的重要措施。
The frail bridge of time on which we tread sinks back into eternity at every step we take.
时间的桥梁脆弱不堪，我们每走一步，脚下的那一块就会掉入永恒之中。
They whispered the first word into my ears, softly; they held my hands to lead me to tread my first step, firmly.
他们温柔地把第一个字送进我的耳朵，轻轻地握着我的手来让我迈出我的第一步。
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