查询词典 sparse matrix

The theory asserted that all organisms were generated, naturally, randomly and purposelessly, and the generation of life was due to non-living matter, the wide variety of organisms were evolved from sparse kinds of ones, or even from a common ancestor, and more complex organisms were evolved from simpler ones...

生命起源于无生命物质；形形式式、丰富多彩的生物体是由种类很少的生物体演化而来，甚至是拥有一个共同的始祖。复杂的生物体由简单的生物体演化而来

The method is also be used to solve large-scale sparse quadratic programming.

该方法的主要优点是简单、方便、计算效率高，可以用于求解大规模问题。

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。

At present, only a few distribute on a sparse population's waters in the upper reacher of Talimu River and Kaidu River. In Dayouerdusi Basin,the Schizotharax biddulphi Gunther live in depth about 1. 5 meters in f...

在大尤尔都斯盆地，尖嘴臀鳞鱼仅活动于水深大于1.5m的流动水体，5月15日至30日行短距离迥游至繁殖区，迥游距离约15km左右，繁殖区水质pH值在6.0以上，水深多大于2m。

Statistical significance can not be found between 24hours and 48 hours.. Under an inverted microscope , we can observed the cells adherent, fullness, polygon in control group, the cells amout sparse, suspended, quasi-round, and no refractional nature in experiment groups, the highter the concentration is, the greater themorphological change of cells will become.

形态学分析，在倒置显微镜下可见，经药物作用后MCF-7细胞数目减少，细胞形态由原来的贴壁良好、饱满、多角形、梭形变为类圆形、悬浮、颜色变暗、无折光性，且随药物浓度的增加细胞形态变化越大。2。

Aerial image can be computed fairly fast by this method compared with the rigorous solution of the Hopkins equation, especially for the situation of many sparse aerial points which is often met in OPC application.

一个双线性光学系统分解成为一组空间域卷积核，并通过对版图的空间域卷积来计算空间光强。与采用Hopkins公式的SPLAT相比，这种方法能快速地计算空间光强。尤其对于大面积计算显得更为有效。

All measured heavy metal concentrations in roadside soils of Beiyan road,which had sparse protection forest,decreased exponentially with the increase of distance from the road; the maximum heavy metal value appeared within the distance of 15 m from Beiyan road.

公路防护林体系较差的北沿公路路侧土壤纵向剖面重金属含量随距路肩距离增加呈指数下降，土壤重金属重污染区在距路肩15 m范围内。

They had typical appearance features of Laron syndrome such as short stature and obesity, with protruding forehead, saddle nose, large eyes, sparse and thin silky hair and high-pitched voice.

他们出生体重和身长无特殊，自生后出现生长落后，身高明显落后于同龄正常儿童，并均呈现了典型Laron 综合征外貌特征：身材矮、肥胖、前额突出、大眼睛、塌鼻梁、头发稀软。

The sediment of flourish salt marsh was thinness than that of sparse salt marsh.

人类活动在改变盐沼植物特征的同时也会改变沉积物粒径的空间分异。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。