devisor
1. throw new DevideByMinusException("devisor is "+y);
//如果除数是负数,抛出异常。
2. If the heritage amount is neglected, the devisor factor will be greatly underestimated;
研究表明,忽略可继承性会严重低估计发月数,并产生大量资金缺口;
3. Devisor Factor
计发月数
4. the expected life has no effect on the devisor factor;
计发月数与期望寿命无直接关系;