... 苯乙烯-异戊二烯共聚物：PSt-PIp copolymer 背面照明光源：Backlighting Source 备份：Backup ...
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backlighting source
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
The company is also promising stronger backlighting, since the keys sit close to the substrate and there aren't rubber domes blocking the light source.
ENGADGET: Synaptics enters the keyboard market, announces the ThinTouch keyboard aimed at Ultrabooks
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