查询词典 sparse matrix

Results Under TEM, the surface and nuclear membrane split, a great number of vacuoles and high electron density particles appeared in the cytoplasm in Pc trophozoites, vacuoles also did in Pc cysts, intracystic bodies became denaturation and necrosis; under SEM, filopodia and microvilli became sparse,short and fell off, a breach appeared in the surface membrane in Pc trophozoites.

结果 透射电镜发现Pc滋养体表膜和核膜破裂，胞质中出现大量空泡和高电子密度颗粒，Pc包囊中也出现空泡，囊内小体变性坏死；扫描电镜发现Pc滋养体丝状伪足和微绒毛稀疏、变短甚至脱落，表膜出现缺损。

Upright stems bear sparse emergences and divide pseudomonopodially with the isotomous lateral branches.

具有根状茎，气生茎上着生有稀疏的刺状突起，假单轴分枝，侧枝等二叉分枝。

His distorted trunk seemed kraurotic, but the new sparse leaves on his branches indicated his fortitude And vitality.

只见它一副古怪扭曲的身躯似干若枯，枝叉上稀疏的新叶向周围标明着它的坚毅与生命。

Culm internode cavity pith lamellate; internodes initially villous; culm sheath sometimes with sparse oral setae.

Culm节间洞木髓包含薄片；节间最初具长柔毛；有稀少口头的刚毛的有时的竿箨。

The each velocity, pressure and kinetic energy distribution of the sparse strip belt, draught meshy belt and tight nubby belt were obtained by calculation based on time-average Renoyld equations.

通过对雷诺时均控制方程的离散求解，得到了通风型条状林带、疏透型网状林带、紧密型块状林带各自对应的流场、压力场和湍流动能场的分布。

Hard data documenting these global developments at the appropriate microlevel are regrettably sparse.

令人遗憾的是，缺乏过硬的数据在合适的微观层面上详尽描述这种全球性的变化。

Based on the analysis on the character of MPDI, the relationship between NDVI and MPDI is studied, and the threshold value of MPDI under densely vegetation covered, middle vegetation covered, sparse vegetation covered and nudation are built. MPDI＞0.12 means the surface is desert,sand or rocks; 0.01＜MPDI＜0.12 means the sureface is covered by middle vegetation, and MPDI＜0.01 means the earth is covered by densely vegetation. 4. Based on the expirical model relation between MPDI and vegetation optical thickness, the latter is computed by the modified algorithm.

在分析微波极化差异指数MPDI特性的基础上，分析了新疆植被指数NDVI和微波极化差异指数MPDI二者的相关关系，并建立了浓密植被覆盖、中等植被覆盖以及稀疏植被覆盖和裸露地表三种植被覆盖状况所对应的微波极化差异指数MPDI阈值。

We study the theories of overcomplete sparse image representation based on redundant dictionary and its application.

论文研究了基于冗余字典的超完备图像稀疏表示理论及其应用。

Based on the overcomplete dictionaries, it can provide the sparse representation of a given signal from the limited observations.

它以过完备词典为基础，能从有限的观测数据中获得信号的稀疏表示，有效地挖掘信号的自然属性和本质的驱动源，提高变换域的分辨率，为信号处理提供了有力的工具。

The problems of redundant dictionary construction in overcomplete sparse representation are studied. A method of multiscale Ridgelet dictionary construction is proposed.

2对超完备图像稀疏表示中冗余字典的构造问题进行研究，提出了冗余多尺度脊波字典的构造方法。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。