然而对于这些前端与后端在某种程度上已经分离的产品，我不知道什么是公平的定价模式，也不确定未来的软件定价会发生什么变化。显而易见如果没有人愿意买账，大家都去编写自己的代码而不再有任何竞争，那么定价逻辑将保持不变，但你可以想象未来人们都在定制化的前端上构建东西然后直接从底层数据库中读取数据。因为所有的记录系统都有一个数据库代表了底层的一切抽象层，那么这些类别中的任何一个是否会面临价格压力？
In our testing, we focused on Wi-Fi-connected “smart” air purifiers with companion apps that can monitor air quality and adjust the fan settings as needed. Within the apps, you can control auto-clean settings, set timers and schedules and check the health of the filter as well. Most will remind you when it’s time to get a replacement, and let you order one directly from the manufacturer through the app. You can also see the current and historical readings from the internal air quality (AQ) sensor. Most determine air quality through an optical particle meter, though some brands like Dyson and Molekule also include chemical sensors for VOC measurements. When levels of particulates become elevated, the fans switch up to high speed to move more air through until the quality improves.
。业内人士推荐新收录的资料作为进阶阅读
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