This makes HTTP multiplexing completely ineffective.
这会使HTTP多路复用完全失去效用。
Prior to 1990, the Act had proved completely ineffective in dealing with acid rain.
1990年以前，该法案在处理酸雨问题上毫无建树。
The most detrimental impurities in the feed water are anionic high molar mass substances. They can greatly reduce the efficiency of the retention AIDS or even make them completely ineffective.
为减少水耗可以用循环水，供水中最有害的杂质是阴离子高分子量物质，会大大减少助留剂的效率，甚至使它们完全失效。
The most detrimental impurities in the feed water are anionic high molar mass substances. They can greatly reduce the efficiency of the retention AIDS or even make them completely ineffective.
为减少水耗可以用循环水，供水中最有害的杂质是阴离子高分子量物质，会大大减少助留剂的效率，甚至使它们完全失效。
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