例句與造句

1. double beam spectrum radiator
   雙光束光譜福射計(jì)
2. single beam spectrum radiator
   單光束光譜輻射計(jì)
3. laser spectrum radiator
   激光光譜輻射計(jì)
4. It's difficult to find spectrum radiator in a sentence. 用spectrum radiator造句挺難的