然后，应用离散方法将双重积分转化为双重求和，得出了可用于船舶空间磁场工程计算的实际公式，具有实用价值。

Then, double integration is transformed into double sum through discrete methods. And finally, we get the formula in engineering to solve such calculation with great importance in practice.

youdao

然后，应用离散方法将双重积分转化为双重求和，得出了可用于船舶空间磁场工程计算的实际公式，具有实用价值。

Then, double integration is transformed into double sum through discrete methods. And finally, we get the formula in engineering to solve such calculation with great importance in practice.

youdao