Metal grain

 
  • 金属颗粒

Metal grain的用法和样例:

例句

  1. Check the engine tail pipe on metal particles and visible damage.
    检查发动机尾喷管无金属颗粒和损坏。
  2. They seem to be metal particles that move along certain paths.
    它们看起来似乎是沿着某些轨迹移动的金属颗粒。
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