沙堆

So he searched around till he found a small sandy spot with a little funnel-shaped depression in it.

于是他在周围找到一个小沙堆，沙堆中间有一个漏斗形凹陷处。

The innovation of our rearch:(1) A new one-dimensional sandpile model is set up, in this model avalanche probability is introduced.(2) Emulational simulation is performed with cellular automata method, and numerical analyse is carried out according the simulation result.(3) With the simulation result, We not only explained the SOC phenomena appearing in real sandpile, but also revealed a new path to SOC.

本文的创新之处在于：建立了一个含崩塌概率的一维沙堆模型；用元胞自动机的方法对模型进行了仿真模拟，并对仿真结果进行了数值分析；我们的模拟结果不仅很好地解释了真实沙堆中出现的自组织临界现象，而且揭示了一条通往自组织临界性的新途径。

A classical one dimensional sandpile model was researched in this paper, the model can not explain the self-organized criticality phenomena which appearing in one dimensional rice pile, so we did some mend on this model and make it including avalanche probability, with the new model we explained the SOC phenomena appearing in one dimensional grain pile.

本文考查了一个经典的一维BTW沙堆模型，发现它不能描述实验中已观察到的一维米粒堆的自组织临界现象，因此本文对经典一维BTW模型进行了改进，建立了一个含崩塌概率的一维沙堆模型，并用该模型解释一维米粒堆中出现的自组织临界现象。

SOC phenomena does not appears in classical one dimensional sandpile model, but for two or three dimensional model, it does. However, some people did some experiments with rice and find the SOC existing in one dimensional rice pile, it is not fit with the classical sandpile model. Nobody explained this phenomena.

在经典的一维沙堆模型中，沙堆崩塌时并没有出现自组织临界现象，只有在二维以上的沙堆模型中才出现自组织临界现象，然而，后来有人用米粒做实验，发现一维米粒堆中存在自组织临界现象，这与经典的一维沙堆模型相违背，但是却没能对这种现象作出一个较好的解释。

We investigate a deterministic,conservative,undirected,and critical height sandpile model with dissipation of an energy at boundaries that can simulate avalanche dynamics.

通过研究如何用沙堆模型来描述电力系统的自组织临界性，提出了先建立各网省局等规模稍小电网的实时动态沙堆模型从而形成一个沙堆群的模型来模拟整个全国电网的设想。

The results of imitative experiments indicate that the distribution character of the surface pressure on semispherical and conical sand mound without plant is obviously different.

人工"植物"引发的沙堆丘顶和背风坡区域表面风压的显著变化有利于截留沙尘、保护沙堆免受风蚀并促进沙堆增长。

In the flip dice game, it's not such several dices but your sheep and treasure that attract your concern. For a boy playing on the sands, fortresses are not themselves but forts, hills or boats in his eyes.

在玩骰子的时候，你玩的不是那几颗小小的骰子，而是你的羊群和金银财宝，而在那个在沙滩上玩的孩子眼里，沙堆也不是沙堆，而是要塞，山岭或船只。

In the flip dice game, it's not such several dices but your sheep and treasure that attract your concern. For a boy playing on the sands, sandpiles are not themselves but forts, hills or boats in his eyes.

在玩骰子的时候，你玩的不是那几颗小小的骰子，而是你的羊群和金银财宝，而在那个在沙滩上玩的孩子眼里，沙堆也不是沙堆，而是要塞，山岭或船只。

A relatively sand fun puzzle game, the need for security requirements of two different colors of sand in the corresponding flag, the more closed.

介绍：一款比较好玩的堆沙益智游戏，需要安要求将两种不同颜色的沙堆在相应的旗子上，关上较多。

Especially, the size and volume of sand-mound has constant variation at under the 100 m scale in the alluvial fan, and has random spatial pattern without law.

湖盆低地由自相关因素引起的沙堆大小和积沙体积空间异质性占主要部分，分别体现在1.2～84 m和1.2～505 m尺度；而山前冲积扇的随机因素引起的沙堆大小和积沙体积空间异质性占到100％，在100 m以下尺度该区白刺灌丛沙堆大小和积沙体积具有恒定的变异，其空间分布格局在这个尺度无规律体现呈随机分布。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。