在必要的空间计算中，该方法又利用了格林函数节块法的原理求解形状函数的空间分布，使空间网格距可以达到有限差分法的近20倍。
In spatial calculation, the NGFM is used to get the distribution of shape function, and it's spatial mesh can be nearly 20 times larger than that of Diffinite Differential Method.
显而易见，最简单的办法就是使用“双重差分法”(亦译作“倍差法”)，其在经济学的很多领域得到了广泛应用。
Obviously, the easiest way was just using the "difference-in-differences" analysis, which was popular among many areas of economics.
显而易见，最简单的办法就是使用“双重差分法”(亦译作“倍差法”)，其在经济学的很多领域得到了广泛应用。
Obviously, the easiest way was just using the "difference-in-differences" analysis, which was popular among many areas of economics.
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