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DescriptionIn a wireless network with multiple transmitters sending on the same frequencies, it is often a requirement that signals don't overlap, or ... 阅读全文
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Problem Description杭州人称那些傻乎乎粘嗒嗒的人为62(音:laoer)。杭州交通管理局经常会扩充一些的士车牌照,新近出来一个好消息,以后上牌照,不再含有不吉利的数字了,这样一来,就可以消除个别的士司机和乘客的心理障碍,更安全地服务大众。不吉利的数字为所有含有4或62的号码。例如:... 阅读全文
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DescriptionSquare Ice is a two-dimensional arrangement of water molecules H2O, with oxygen at the vertices of a square lattice and one hydrogen atom b... 阅读全文
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DescriptionDid you know that you can use domino bones for other things besides playing Dominoes? Take a number of dominoes and build a row by standing... 阅读全文
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DescriptionIt is always very nice to have little brothers or sisters. You can tease them, lock them in the bathroom or put red hot chili in their sand... 阅读全文
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DescriptionProfessor Clumsey is going to give an important talk this afternoon. Unfortunately, he is not a very tidy person and has put all his transp... 阅读全文
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DescriptionIn order to build a ship to travel to Eindhoven, The Netherlands, various sheet metal parts have to be cut from rectangular pieces of sheet... 阅读全文
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DescriptionSquares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (... 阅读全文