retraction bulb造句

"retraction bulb"是什么意思   

例句与造句

  1. The proximal segment fuses, retracts, and swells, forming a " retraction bulb ".
  2. It's difficult to find retraction bulb in a sentence. 用retraction bulb造句挺难的

相关词汇

  1. "retracting forward"造句
  2. "retracting slide"造句
  3. "retracting spring"造句
  4. "retracting strut"造句
  5. "retraction"造句
  6. "retraction coefficient"造句
  7. "retraction cycle"造句
  8. "retraction device"造句
  9. "retraction fiber"造句
  10. "retraction line"造句
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