1)梯级踏板(step tread) 带有与运行方向相同齿槽的梯级水平部分。 2)梯级踢板(step riser) .
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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
former end of step tread 梯级踏面前缘
·2,447,543篇论文数据,部分数据来源于NoteExpress
The lesson is that, if you do tread there, watch your step.
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