This pape has discussed the definitions of Four-dimension Space, Four-dimension Velocity,Four-dimension Momentum,Four-dimension Force.

文章介紹了四維空間矢量、四維速度矢量、四維動量、四維力矢量的定義 ,討論了它們的特殊洛倫茲變換的矩陣形式以及它們與普通三維量之間的的關(guān)系。

The four-dimensional momentum current density tensor of electromagnetic field is defined.

定義了電磁場的四維動量流密度張量,并將電磁能量轉(zhuǎn)化和守恒定律及動量轉(zhuǎn)化和守恒定律寫成了四維協(xié)變形式。

The Four Dimensional Tensor Expression of Maxwwll's Equations and Its Covariance

Maxwell方程的四維張量形式及其協(xié)變性

The energy density of the4- dimensional spacetime is supposed to be dominated by incoherent radiation and the energy-momentum tensor of the internal subspace is a step function.

我們假定四維時空的能量密度是以輻射為主的,而內(nèi)稟子空間的能動張量是一個階躍函數(shù)。

three-dimensional quadrupole mass analyzer

三維四極質(zhì)量分析器

The fourth-rank tensors contain the compliance and stiffness constants.

四秩張量包含柔量常數(shù)和剛度常數(shù)。

Homological Dimension and Tensor Identity of Representations of Quantum Algebras;

量子代數(shù)表示的同調(diào)維數(shù)及張量等式

Assay of four vitamins in siweita capsule

四維他膠囊中4種維生素的含量測定

A Discussion on four Dimensional Divergence of Four Vector of Entrophy of Ideal Fluid According to Energy-Momentum Tensor T~(ab);

從能量動量張量T~(ab)討論熵四矢的散度

The elastic moduli Eijlm represents a tensor of the fourth order.

彈性模數(shù)Eijlm表示一個四階張量。

Three Dimensional Cartesian Representation of Gravity Vector and Gravity Tensor

引力向量與引力張量的三維笛卡兒坐標(biāo)表示式

She had no time to look about, and bent anxiously to her task.

她沒有時間四面打量，埋頭緊張地干著她那份活。

Determination of Vitamin B1,Vitamin B2 in Four Vitamin Glucose Calcium Particles for Children by HPLC;

HPLC法測定小兒四維葡鈣顆粒中維生素B1、維生素B2的含量

THE DEFINITIONS OF SOME FOUR-DIMENSION MECHANICAL QUANTITIES AND THE RELATIONSHIPS WITH THREE-DIMENSION QUANTITIES;

幾個四維力學(xué)量的定義及與之相應(yīng)的普通三維量的關(guān)系

Study of Cerebral White Matter Fiber by Using MR Diffusion Tensor Imaging

大腦白質(zhì)纖維磁共振彌散張量成像研究

Diffusion Tensor MR Imaing of the White Matter Fiber Tracts of the Brainstem

腦干白質(zhì)纖維束磁共振擴散張量成像研究

Diffusion-Tensor MRI Study of The Normal Human White Matter Structure

正常人腦白質(zhì)纖維結(jié)構(gòu)的擴散張量成像研究

The Symmetry Conservation Tensor and Euler Angles of the Isotropic Three - dimensional Harmonic Oscillator

三維各向同性諧振子的對稱守恒張量與歐勒角

Study of Cerebral White Matter Fiber in Children by Using MR Diffusion Tensor Imaging;

兒童大腦白質(zhì)纖維磁共振彌散張量成像的研究

The Reconstruction Algorithm of Neural Fibers in the Brain White Matter Based on Diffusion Tensor;

基于擴散張量的腦白質(zhì)內(nèi)神經(jīng)纖維的重建算法