index record header 索引记录标头
Payload Header Suppressed Index 头压缩索引
header index
头指数
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Websites that dynamically serve content optimized for a mobile experience on the same URL should notify Google via the Vary HTTP header so that Googlebot-Mobile crawls and indexes mobile content for inclusion in the mobile index.
FORBES: How to Dial Up Mobile SEO
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