平均数意味着半数养殖户低于19。我们不是统计学家，但是如果我们从19开始做贝尔曲线，每头母猪超过25头猪的很少。
An average means half of our producers are below 19. We are not a statistician but if we bell curved from 19 there would be very few over 25 pigs per sow.
一个J2ME的应用程序，需要每天测量你的体重，并显示在一个带移动平均数“趋势曲线”的图表上，以便吸收日常称量的错误。
A J2ME application that takes daily readings of your weight and displays in a chart with a moving average "tendency curve" in order to absorb errors in daily weighing.
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