英语翻译
The term "isometry" has an advantage in that it can be used to treat the real and complex cases simultaneously,but for clarity we will often revert back to the more cumbersome " orthogonal " and " unitary " terminology.
参考译文:等距映射有一个优点是:它可同时用于研究实数和复数情况,要不是透明我们意志经常恢复到越多麻烦的正交和酉矩阵术语学.