The "e", "e -", "e", or "e -" formats indicate that a sign character should only precede negative exponents.

或“e-”格式指示符号字符仅置于负指数前面。

youdao

The "e", "e -", "e", or "e -" formats indicate that a sign character should only precede negative exponents.

或“e-”格式指示符号字符仅置于负指数前面。

youdao