• 1. BackStep: 后面的台阶 | 后退一步 | 后面的阶梯 | 后退
• 2. backstep welding: 分段退焊 | 逐步退焊法 | 分段逆焊 | 反向焊
• 3. backstep welding sequence: 分段退焊次序

更多释义

• 1.The backstep, or outside edge of the shoe, is also often used when stepping through.
  这种步法也常用于过渡。
  dict.yoduao.com

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