稀疏

The shortest path raytracing algorithm in networks is widely applied to calculate seismic ray paths and traveltimes, in which the beelines between network nodes are used to approximate the ray paths.

最短路径射线追踪算法，用预先设置的网络节点的连线表示地震波传播路径，当网络节点稀疏时，获得的射线路径呈之字形，计算的走时比实际走时系统偏大。

The tracks comprise a bright, focused performance of Benny Golson's "Stablemates," a sparse, bluesy take of the standard "Yesterdays," a pair of good Waldron originals and one from Sulieman, along with Lee Sears'"Transfiguration."

铁轨包括明亮，集中的尼Golson的&伙伴们的表现，&稀疏，bluesy利用标准&昨天的&良好沃尔德伦原件和Sulieman医生一对，加上李西尔斯容。与现状

Bushmen have a piece of territory is more than 80,000 square kilometers of grassland and sparse grassland forest, surrounded by desert.

布须曼人的领地是一片有着8万多平方公里的草地和稀疏的草原森林，周围是荒漠。

On the termination date, the cultured explants were all examined by Western blot, HE and transmission electron microscope. Our results showed that after 12-days in culture, the cultivation treated with AS-ODN reduced the synthesis of AMBN and had a deformed dental cusp with thinner enamel matrix. Ultrastructure analyses showed that there was hardly any cisternae of the rough endoplasmic reticulum in the ameloblasts at the tip of the cusp of AS-ODN treatedexplants. However, on average the enamel matrix was thinner compared with that in the control group. Furthermore, the collagen fibers in extracellular matrix were found disorganized. These findings seemed to provide a direct experimental evidence that tended to indicate that the arrested AMBN translation in cultured tooth germs might result in the delay of the tooth development.

经用Western蛋白印迹检测表明，所设计的反义核酸对AMBN InRNA具有良好的封闭效果并成功阻断了牙胚对AMBN的表达；在缺乏AMBN情况下，与对照组相比，实验组牙胚在体外可以继续生长发育至钟状晚期，出现成釉细胞和成牙本质细胞的分化，成釉细胞可以分化成为分泌期型成釉细胞，胞浆中缺少合成蛋白质所必需的粗面内质网和高尔基氏体，缺乏溶酶体，表明对蛋白合成和脚的能力降低；实验组牙胚有牙尖形成和基质分泌，但牙尖形态异常，基质形成减少，牙尖周围基质最厚处为O.6卜m，明显薄于对照组的5.spin，基质中胶原纤维粗细不等，排列稀疏， 3 第四军医大学硕士学位论文未见钙化现象，充分证明了AMBN在牙胚发育中参与釉质基质形成和矿化过程，影响胶原纤维和牙本质基质的合成，促进成釉细胞对蛋白质的合成和釉质基质蛋白降解。

As one moved South there were trees upon the south lawn, a few, and then more, and then scattered copses, then thick copses.

如果你向南一直走，将会看到草地上越来越多的树木和稀疏的灌木丛，然后是浓密的灌木丛。

In this low ground about Borodino in the mist, and above it, and especially along the whole line to the left, in the copses, in the meadows below, and on the tops of the heights, clouds of smoke were incessantly springing out of nothing, now singly, now several at once, then at longer intervals, then in rapid succession. These clouds of smoke, puffing, rolling, melting into one another, and sundering apart, trailed all across the wide plain.

在雾气腾腾的波罗底诺附近的洼地上，以及在它以外的高地上，特别是在战线的左方，在树林、田野、洼地、高地的顶端，仿佛无中生有似的不断地腾起大炮的团团浓烟，有时单个出现，有时成群出现；时而稀疏，时而稠密，这一带到处可以看见烟团膨胀开来，茂盛起来，汹涌滚动，混成一片。

In allusion to the above-mentioned problems, considering the self-adaptive regulative ability of the visual system to natural perceptive information and the feedback between visual cortexes, a bidirectional NNSC model is proposed, which is based on the robust principal component analysis and the priors of receptive fields of simple cells in V1. And using the (Polak-Ribiere-Polyak) PRP conjugate gradient descent algorithm, the minimum optimization problem of the objective function can be realized.

针对上述问题，考虑视觉系统对外界感知信息的自适应调整机制和视皮层之间的反馈连接，本文提出了一种基于稳健 PCA 和 V1区简单细胞感受野先验知识的反馈非负稀疏编码模型，并且使用 Polak-Ribiere-Polyak共轭梯度下降优化算法实现了目标函数的最小化问题。

Figure 2a shows a 5 ím 5 ím fluorescence image of the PFPV dots sparsely dispersed on a glass coverslip.

图2a示出了稀疏地分散在一个玻璃盖片上的PFPV点的5μm×5μm荧光图像。

The cornfields are sparse, their grandparents look terrible, and the single scarecrow has been replaced by 12 towering, dark, evil-looking ones that seem to have a life of their own...

麦田是稀疏的，他们的祖父或祖母看起来可怕，而且单一稻草人已经被似乎有他们自己的生活的 12个高耸的，黑暗的，和看邪恶的一些代替。。。

Inverse of the sparse matrix is then factorized recursively with Cholesky factorization. Thereafter, a preconditioner in a form of successive multiplication is constructed.

然后采用Cholesky分解方法将该稀疏阵的逆阵进行递归分解，得到一个矩阵连乘形式的预条件阵。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。