稀疏

In this review, historical background of sampling theory and development of forest inventories are presented. Application and research status of sampling methodology and technology in forest inventory in China and abroad are analyzed and reviewed, which includes sampling with probability proportional to frequency or to size, sampling based on remote sensing and sampling for rare population. Finally, both development trends and some problems of sampling methodology are discussed.

本文介绍了抽样理论的发展和国内外森林抽样调查发展过程，论述了森林调查中主要抽样方法的特点和研究现状，其中包括等概和不等概抽样、基于遥感的抽样、针对稀疏总体分布的抽样调查技术方法，并对这些抽样技术在国内外森林资源调查中的应用进行了综述，概括了抽样调查技术方法的发展趋势，最后总结了抽样技术方法还存在的一些问题。

Because the radiosonde observation stations are sparse, there are only a little of information of mesoscale in assimilation resulte.

探空网的探测点稀疏（间距一般在300 km或以上），单纯用它们作客观分析会使得同化结果缺乏中尺度信息。

The data can be read out in both random and sparse scan ways.

该组件有两种读出方式：随机读出和稀疏扫描读出方式。

The results show that the rarefaction wave influences the premixed flame structure and propagation greatly.

实验过程中，通过不同的点火方案诱导出不同传播方向的稀疏波与火焰发生干涉作用。

On the basis of forefathers study, the interaction of the shock waves of torrent, and that of rarefaction to shock wave have been discussed in detail in the useof the concept of the curve.

在前人研究的基础上，通过引入曲线的概念，分别对急流冲击波的相互作用，稀疏波与冲击波的相互作用进行了比较详细地讨论。

The method based on statistics has the problem of training data s rarefaction, and what restricts the more progress of corpus is the too large workload of manual tagging.

基于统计的汉语自动分词方法存在训练数据稀疏的问题，而人工标注工作量过大又制约着语料库规模的进一步扩大。

In the situation of shock wave, the interaction caused by the situation of one shock wave catching up with another is qualitatively analyzed with the result of the wave form: reflection rarefaction and incidence shock wave.

对急流冲击波的情况，从定性的角度分析了一个冲击波追赶上另一个冲击波后的相互作用，得到可能产生的波形，即反射的稀疏波和入射的冲击波。

In this paper, a new approach, named N-tuple neural network with the rarefaction RAM, is presented. It is used in the football robot match, can swith recognize the members of the two teams.

提出了一种采用稀疏RAM的N-tuple神经网络的方法，用在足球机器人比赛时，根据图像快速识别队员。

Simultaneously, the lateral rarefaction waves from the air and the previous detonation product lead to the detonation deficit.

在侧向稀疏波和前一次爆轰产物的共同影响下，二次爆轰波形成爆轰亏损。

The rarefaction wave immediately behind shockwave decompressed the shattered rock and threw them along with jet current.

紧接着冲击波后面形成的稀疏波使压碎的岩石减压并随喷射流抛出。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。