但是，虽然SSD的成本每个季度都在递减，但是SSD仍然比HDD昂贵。

But although SSD costs are declining every quarter, SSDs are still more expensive than HDDs.

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与之前十年相比（1.3%），递减速度自2000年提高了一倍，达到每年2.7%。

The rate of decline has doubled to 2.7% per year since 2000, compared to the previous decade (1.3%).

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固定百分比余额递减折旧：一种加速折旧的方法。在这一方法中，折旧率是直线法折旧率的一个倍数，每年用此折旧率乘以资产的未折旧成本。

An accelerated method of depreciation in which the rate is a multiple of the straight-line rate, which is applied each year to the undepreciated cost of the asset.

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