查询词典 pyramidal

Why did the Qin army choose the trigonal pyramidal for their arrowheads?

秦军为什么单单选择了这种三棱箭头呢？

Seed cones (7-)9-18(-20) cm, all deciduous; umbo central, depressed-pyramidal, with a stout, short prickle; needles 2 or 3 per bundle

球果(7-)9-18(-20)厘米，全部落叶；中心，下凹的金字塔的鳞脐，具一粗壮，短皮刺；针叶2或3 每包 15 Pinus elliottii 湿地松

Apophyses dull or lustrous, thickened, variously raised, cross keeled; umbo usually pyramidal or truncate, rarely depressed or with a reflexed prickle.

有光泽的Apophyses暗或，加厚，各种地凸起，穿过龙骨状；通常的鳞脐金字塔的或截形，很少下凹或具一反折的皮刺。

In Chapter 4, we discuss WTC based on pyramidal lattice vector quantization .

第四章研究了基于塔式网格矢量量化的小波变换编码。

A coding scheme is proposed to eliminate the redundancy of output vectors in pyramidal lattice vector quantization .

并证明了，存在唯一的滤波长度为5的对称双正交小波，不存在滤波长度为5的反对称双正交小波。

Pyramidal lattice vector quantization has drawn extensive attention by its promising property recently. The coding method based on zerotree coding［1］ has made a great coup during the last few years.

近年来，金字塔格型矢量量化方法由于其本身的特点和性质引起了人们的广泛兴趣，而文献［1］介绍的基于零树的编码也获得了极大的成功。

In our study of data compression, an entire research is given to the problem of the index of lattice points in pyramidal lattice vector quantization ,and index algorithms are presented to index the Iattce points of some usually-used lattices,such as ZL, DL, E8 and A16so on.

我们在数据压缩课题研究中，对塔式网格矢量量化中格点的标号进行了探索，给出了常用的几种网络诸如ZL、DL、E8、A16等格点的标号算法。

OBJECTIVE: To observe the characteristics of epileptiform activities of rat hippocampal CA1 pyramidal neurons induced by low-dosage veratridine and investigate its possible ion mechanism.

目的：观察小剂量藜芦碱诱发大鼠脑海马CA1区锥体神经元产生癫痫样活动的特征，探讨其可能的离子机制。

Low-dosage veratridine may induce runs of PDS like epileptiform activities on rat CA1 pyramidal neurons.

小剂量藜芦碱可在大鼠脑海马CA1区锥体神经元上诱发出阵发性去极化漂移样癫痫活动。

Recertly, the intrinsic nature of PDS has received more attention.OBJECTIVE: To observe the characteristics of epileptiform activities of rat hippocampal CA1 pyramidal neurons induced by low-dosage veratridine and investigate its possible ion mechanism.

近年来，阵发性去极化漂移的内因机制得到进一步关注和重视。；目的：观察小剂量藜芦碱诱发大鼠脑海马CA1区锥体神经元产生癫痫样活动的特征，探讨其可能的离子机制。

The two-acre Dunbar Community Garden in Little Rock has served as a model for several years.

几年来，坐落于小石城，占地两英亩的邓巴社区菜园树立了一个标杆。

Jerry points to the jacket hanging in the bathroom. It's ruined, and unwearable What?

杰瑞指着洗手间里挂着的夹克，毁了，不能穿了）什么？