决定性 发表于 2025-3-25 03:31:29
7楼GAVEL 发表于 2025-3-25 10:42:33
7楼observatory 发表于 2025-3-25 15:34:00
7楼rectocele 发表于 2025-3-25 18:05:37
7楼Delirium 发表于 2025-3-25 22:26:00
http://reply.papertrans.cn/75/7409/740896/740896_25.pngDungeon 发表于 2025-3-26 01:33:55
Commodity Problems,ed and developing countries. The problem has, of course, been far more important for developing countries, many of whom are heavily dependent on primary commodities for income and export earnings. A continuing decline in prices can, on the other hand, be calamitous for many developing countries. Com同步信息 发表于 2025-3-26 04:53:56
is not constructible and that, therefore, an angle of 60 degrees cannot be trisected using only a straightedge and compass. We present a complete proof of this remarkable fact. This is accomplished by studying the properties of “constructible numbers”, and produces corollaries concerning constructibility of other geometric figures.blackout 发表于 2025-3-26 08:42:10
http://reply.papertrans.cn/75/7409/740896/740896_28.png情节剧 发表于 2025-3-26 16:40:05
http://reply.papertrans.cn/75/7409/740896/740896_29.pngMUMP 发表于 2025-3-26 18:24:34
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