非正的

Let A be a nonsingular nth-order real matrix, then cond_p =||A||_p||A~(-1)||_p =1(p= 1,∞), if and only if A = cpσ, where c is a positive constant, p is a permutation matrix, or is a diagonal mat...

设A为n阶非异实矩阵，则矩阵A的求逆p-范数条件数等于1的充要条件为A=cpσ，其中c为正常数，σ是置换阵，其对角元都等于+1或-1。

In order to improve the amplitudes of the rigid Earth nutation series, it become necessary to revise the IAU 1976 value of the general precession in longitude.

非刚体地球章动的转换函数中所采用的简正模频率和常数都直接或间接地依赖地球动力学扁率值。

The model of the discrete ordinates method and the finite volume method in multi-dimensional orthogonal coordinates, and body-fitted coordinates is established to solve the radiative transfer equations in absorbing, scattering media.

建立了离散坐标法及有限体积法、正交坐标系多维，贴体坐标系多维吸收、散射性介质内的辐射传递计算模型。研究非灰体粒子系内辐射传递及将其简化为灰介质系的有效方法。

In order to model the inhomogeneity and anisotropy in horizontal error functions of raw background error covariance,a new method is proposed to model horizontal error functions based on orthogonal wavelet transforms.

为了模拟背景误差协方差中水平误差函数的非均匀性和各向异性，提出了一种用正交小波变换模拟水平误差函数的新方法。

According the characters of the orthogonal matrix after SVD,an adaptive image watermarking scheme is given by taking full advantage of Hilbert scanning.

利用了SVD的单向非对称性和正交矩阵的性质，给出了一种自适应水印方案。

In order to increase efficiency we give vector algorithm which is easy to be comprehended and easy to be extended in the point of matrix according to the character of a set of nosinusoidal family orthogonal matrix in this paper.

为进一步提高效率，本文根据一系列非正弦类正交矩阵的特点，从矩阵角度得到一种极易理解、极易推广的向量算法。

METHODS: Using phenacetin as a substrate probe, the effects of Wuji Pill with different compatibility (No.1-9) on the enzymatic activity of CYP1A2 were detected by high-performance liquid chromatography.

按L9(34)正交表，戊己丸的配比设计为9个受试复方，以非那西丁为探针药， HPLC检测戊己丸对大鼠体外肝微粒体CYP1A2酶活性的影响。

19 While Saul was talking to the priest, the tumult in the Philistine camp increased more and more.

14：19 扫罗正与祭司说话的时候、非利士营中的喧嚷越发大了。

The time rate of change of concentration is proportional to the second derivative of concentration.

浓度对时间的变化率成正与浓度对距离的二阶导数。这种关系被用于描述非稳定态扩散。

In this paper,we discuss the existence of positive solution for singular positive boundary value problem of second order differential equations by using a general cone fixed point theorem .

利用一个普通的锥不动点定理研究了二阶奇异非共振边值问题正解的存在性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。