On the thesis , the author forcast the later five and ten years " importation of china by means of linear programming and third exponent smoothing . the outcome shows china still increase her lpg importation in the future to satisfy her demanding to lpg , all these provide prosperous future for lpg transportation 本文采用一元线型回归和三次指数平滑两种定量方法，对中国液化石油气今后五年及十年的进口量进行预测，结果显示中国未来仍将以较高速度增加进口量以满足中国未来对液化石油气的需求，为发展液化石油气海上运输提供了良好的市场前景。
This observation is easily explained , if the universal expansion is accelerating : our motion away from the distant supernovae has speeded up since the light left them , sweeping us farther away than we would be in a universe with a constant or decelerating rate of expansion and hence a lower luminosity than expectation 这个观测结果很容易以宇宙膨胀速度增加来解释。假若宇宙的膨胀正在加速，那么这些超新星远离我们的速度将会不断加大，它们和我们的距离当然会较膨胀速度不变或减慢的情况为远，结果超新星的光度自然会较预期的暗。
According to investigation , the devolution of rangeland in west jilin province has been increasing gradually since 1980 ' s . the investigation in da an county jilin province showed that the speed of devolution has been increased at the rate of 1 % each year since later 80 " and even heavier in 90 ' s , the speed of devolution has reached the rate of 2 % each year . the most serious devolution happened in 1992 . the rate deterioration of had reached 3 . 7 % . then the speed of devolution , desertation , salinization and solonization have slowed down with the increasing degree in harnessing those deteriored grassland 据调查，吉林省西部草原的退化自八十年代起呈逐年加强的趋势，通过对大安市的详细调查显示，八十年代中后期，草原退化以每年1左右的速度增加，到九十年代，草原退化更加严重，退化以2左右的速度增加，严重的92年草原退化的增加速度以达到3 . 7 ，九十年代后期，随着对草原三化治理力度的加强，草原三化的速度有所缓慢。
