r and d project造句

"r and d project"是什麽意思   


  1. important progress was made in major r and d projects, including those to design and develop advanced integrated circuit chips, third-generation mobile communications, high-performance composite materials, and high-grade, digitally controlled machine tools


  1. "r and a"造句
  2. "r and b"造句
  3. "r and bs"造句
  4. "r and d"造句
  5. "r and d program"造句
  6. "r and k selection"造句
  7. "r and m"造句
  8. "r and r"造句
  9. "r and s"造句
  10. "r and w hawthorn"造句

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