Although LEDs will be more profitable than incandescent bulbs the replacement market will eventually dwindle.

尽管LED灯比白炽灯利润空间更大，但灯源替代市场钟会趋于缩小。

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The coconut-based alternative also lasts longer, needs less frequent replacement, and has lower overall lifecycle costs compared to the conventional options on the market.

椰壳基的替代滤材使用寿命更长、不必频繁更换，而且与目前市场上使用的常规滤材相比，全生命周期成本更低。

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Creating a painless, easy, and secure password-replacement system will be a major cash cow for any firm that can effectively bring it to market.

如果有公司能够把一个没有烦恼、简单安全的密码替代系统推向市场，那绝对是财源滚滚的现金奶牛。

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So a majority replacement market works very differently in competitive terms from one pulling in large numbers of first time users.

FORBES: The Smartphone Market Is Peaking Already

But perhaps equally important for the long haul, Apple has a huge leg up in the laptop-replacement market, despite not targeting it aggressively at all.

FORBES: As iPad Mini Looms, Tablets Give Tech Giants Headaches

"It has become largely a replacement market, " Ms. Patel said.

WSJ: Cellphone Sales Boost Best Buy Profit