查询词典 sparse

The main academic productions of this thesis are:(1) the parallel algorithms of computing permanents and permanental polynomials of sparse matrices are designed and implemented;(2) an efficient balancing straggles of parallel load is proposed using the theory of scheduling;(3) valuable data for the research of the molecule structure of fullerenes are obtained;(4) the multi-dimensional stable marriage model and its numerical methods give a new path to solve the clustering problems.

本文的主要学术贡献是：(1)设计并实现了稀疏矩阵积和式与积和多项式的并行算法；(2)利用排序理论给出了有效的负载平衡策略；(3)为富勒烯分子结构的研究提供了有价值的数据支持；(4)多维稳定婚姻模型及计算方法，为聚类问题的求解提供了新途径。

Taking into account the influences of scatterer geometrical shapes on induced currents, an algorithm, termed the sparse-matrix method, is proposed to calculate radar cross section of aircraft configuration.

论证了散射体几何形状对感应电流的影响规律，并基于飞行器几何外形特征和矩量法，提出了一种用于飞行器雷达散射截面计算的高精度快速算法。

Our product is a titanium , sparse noble metal material such as nickel, Mu , tantalum , zirconium processes; The tube , stick , silk , belt , board , foil , net , cake are encircled by reaching alloy products; Reaction equipment (500 L reaction boilers , titanium steel compound reaction boilers , titanium outside plate manage the warmup reaction boiler , the nickel steel compound reaction boiler); Heat exchanger (the titanium enumerates a pipe heat exchanger , titanium plate-type heat exchanger , the nickel heat exchanger , titanium helix plate-type heat exchanger); Compound board (titanium steel compound board , titanium copper compound board , titanium aluminium compound board finished product); The accessory and the heater titanium net are blue , the titanium flange , titanium nut titanium filter , titanium pump , titanium plate manage , the positive electrode , titanium centrifugal machine , titanium heater , various mistake are labeled with equipment and the accessory.

我们的产品是钛、镍、钼、钽、锆等稀贵金属材料加工；管、棒、丝、带、板、箔、网、饼环及合金制品；反应设备（500L反应釜、钛钢复合反应釜、钛外盘管加热反应釜、镍钢复合反应锅）；换热器（钛列管式换热器、钛板式换热器、镍换热器、钛螺旋板式换热器）；复合板（钛钢复合板、钛铜复合板、钛铝复合板成品）；配件及加热器（钛网蓝、钛法兰、钛螺母钛过滤器、钛泵、钛盘管、阳极、钛离心机、钛加热器、各种非标设备及配件。

Culm sheaths brown-red when fresh, with sparse or rather dense small spots, distal margins dark purple

没有腺毛的花梗和萼片；种子肾形三角形，具凹槽 56

They may be divided into two types,the close cushion plant and the sparse one,based upon the different degree of compactness of the shoot.

一、垫状植物共同的形态特征据初步统计本区的垫状植物在巧种以上，最典型、最常见的为囊种草丁砂IacosPe卜。

Leaves triangular- or elliptic-lanceolate, with sparse and sharp denticles on margin.

在边缘上的叶三角形或椭圆形披针形，具稀和敏锐的小齿。

Branchlets smooth with sparse lenticels; central leaflet elliptic or elliptic-lanceolate.

用稀少皮孔光滑的小枝；中心的小叶椭圆形或椭圆形披针形。

The ion concentrations were studied in both four snow pits on Hami Miaoergou FlatTopped Glacier and one snow pit on Haxilegen Glacier No.51 of Kuitun river in eastern Tianshan Mountain, and both snow pits were retrieved in 2004. The results show that the Ca2+, NO-3 and SO2-4, particularly Ca2+, are major ions in the snow of snow pits in both ablation and accumulation area and also in the ice of snow pits in accumulation area on Hami Miaoergou FlatTopped Glacier, where the relationships among major cation concentrations in snow of snow pits can be revealed by ion concentrations in the ice of snow pits, but the correlation between ion concentrations in the snow of snow pits and elevation is not obvious, which probably can be attributed to the narrow span of elevation and sparse snow pits on glacier. However, the good correlation between ion concentrations in the ice of snow pits and elevation indicates that the elution process weakened gradually with the elevation rise and temperature decrease.

对2004年获取的天山奎屯河哈希勒根51号冰川1个雪坑和哈密庙尔沟平顶冰川4个雪坑的离子浓度特征进行了研究，结果表明：Ca2+、NO-3和SO42-是哈密庙尔沟平顶冰川雪坑雪层和积累区雪坑底部冰中的主要离子（尤其是Ca2+），其雪层中的主要阳离子关系可在底部冰中得以较好的反映，但雪层中各离子浓度与海拔的相关性不明显，可能与海拔的跨度较小和挖取的雪坑较疏有关；雪坑底部冰中的离子浓度与海拔间明显的相关性说明淋融作用随着海拔升高、气温降低而逐渐减弱。

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。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。