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research and development--research and development (R & D)
释义
国际贸易词汇手册
research and development (R & D)
研究与开发
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chain explosion
chain feeder
chain feeder
chain filter
chain fission
chain fission yield
chain flexibility
chain folding
chain gauge
chain gearing
chain graph
chain graph
chain grate
chain-grate stoker
chain grizzly
chain group
chain gun
chain haulage
chain hoist
chain home
chain homotopy
chain hook
chain index
chain index method
chaining
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