- injector comparator
- 对比: contrast; comparison; balanc ...
- 器: implement; utensil; ware
- 光学对比器: optical comparater
- 喷油器: fuel atomizer; fuel injector valve; fuel oil injector; fuel sprayer; inj injector; oil atomizer; oil ejector; oil rayer; oil sprayer
- 寻像器对比度: view finder contrast
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