*) Feature: the "ssl_certificate" and "ssl_certificate_key" directives can be specified multiple times to load certificates of different types (for example, RSA and ECDSA).
一大堆 Feature http://nginx.org/en/CHANGES
已成功部署了两个证书,不过 PC 版的 Chrome 并没有选择 ECDSA 证书,只有手机版采用了 CHACHA20 才使用 ECDSA ,可能是 ssl_ciphers 的关系