这些纸张（A0、A1、A2、A3、A4）是多大的？ - 百度知道 这些纸张（A0、A1、A2、A3、A4）是多大的？A0:1189mm X 841mmA1:841mm X 594mmA2:594mm X 420mmA3:420mm X 297mmA4:297mm X 210mm上一个号的短边是下一个号的长边大小
linear algebra - Confused About Fields: Two Proofs for a0 = 0 . . . Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers