lamp changer造句

"lamp changer"是什么意思   


  1. In 1965 Tideland introduced the world first transistorized automatic lamp changer.
  2. An "'automatic lamp changer "'( or "'lampchanger "') is a device used to ensure that a navigational light such as a marine lighthouse or aero beacon stays lit even if a bulb burns out.
  3. It's difficult to find lamp changer in a sentence. 用lamp changer造句挺难的


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