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- 不锈钢，为什么要叫304不锈钢呢？ - 知乎
304不锈钢是不锈钢的一种，是为国家认可的食品级不锈钢，所以大家知道的比较多。 304不锈钢具有良好的耐蚀性、耐热性，低温强度和机械特性;冲压、弯曲等热加工性好，无热处理硬化现象 (使用温度-196℃~800℃)。
- How does 304 Not Modified work exactly? - Stack Overflow
How are "304 Not Modified" responses generated? How does a browser determine whether the response to an HTTP request is 304? Is it set by the browser or sent from the server? If sent by the server,
- 不锈钢304和不锈钢316的区别是什么? - 知乎
304系列和316系列不锈钢都属于奥氏体不锈钢，具有 加工性能好、耐腐蚀、耐锈 的特点，两者相比，316比304的耐腐蚀性和耐热性更强一点，主要原因就是其化学成分上的一些区别。
- Why am I getting (304) Not Modified error on some links when using . . .
59 Any ideas why on some links that I try to access using HttpWebRequest I am getting "The remote server returned an error: (304) Not Modified " in the code? The code I'm using is from Jeff's post here (the page seems to have disappeared, see an archive copy at the Wayback Machine)
- 201不锈钢与304不锈钢有什么区别？ - 知乎
抗压： 因为不锈钢201的碳含量比不锈钢304高，所以不锈钢201比不锈钢304要硬脆，不锈钢304的韧性更好。 抗潮： 因为不锈钢201含有锰元素，长时间在潮湿而且盐分高的空气中会生锈，而304不会生锈；但是也有很多人说不锈钢304生锈了，那可能根本不是不锈钢304。
- 不锈钢可以用磁铁辨别是不是304吗？ - 知乎
相反，质量次一点的200系列不锈钢，很有可能不带磁性，由此判定它是货真价实的不锈钢，就大错特错了。 特别要提出的是，因上述原因造成的304不锈钢的磁性，与其他材质的不锈钢磁性完全不是同一级别的，也就是说304钢的磁性始终显示的是弱磁性。
- apache - Avoiding 304 (not modified) responses - Stack Overflow
The 304 response is the result of a matching If-Match or If-Modified-Since header in the client request What's happening here is your server is sending out either or both of the following headers with its original response: ETag Last-Modified
- How to prevent request that returns 304 - Stack Overflow
The server is returning a 304 after the browser cache has been primed My question is, why is the browser even checking with the server and getting a 304 in the first place? I don't want the browser to go ask if there's a new version—it should load directly from browser cache without checking for modifications with the server serving the script
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