计算某一资产在指定期间的折旧提成，使用年数总和法。

Calculates the depreciation allowance on an asset for a specified period of time, using the Sum-Of-The-Years' -digits method.

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在申请适用35%的税率之前，公司可以扣除雇员报酬、利息支付和折旧提成。

Before applying the 35 percent tax rate, firms may deduct employee compensation, interest payments, and depreciation allowances.

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在申请适用35%的税率之前，公司可以扣除雇员报酬、利息支付和折旧提成。

Before applying the 35 percent tax rate, firms may deduct employee compensation, interest payments, and depreciation allowances.

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