查询词典 root

Aiming at the problem of the odd point in the calculation of rotors torsional vibration characteristics by using the improved Riccati method, this paper presents a new viewpoint about how to confirm and remove the lost root and the added root of equation.

本文针对采用改进型Riccati方法计算轴系扭振特性中所出现的奇点问题，提出还需检测判断剩余量与振型，从而进一步确定和排除方程"漏根"和"增根"的方法。

In this paper, a new method used to deal with the motion ability is studied deeply based on Routh-Hurwitz Criterion. The advantage of this kind of analysis method consists in the fact that after establishing the equation in differential calculus for the motion system, there is no need to know a root of the equation, if you know the root signs, you can judge the zero solution stability of the system.

本文利用劳斯－赫尔维茨判据(Routh-Hurwitz Criterion)对机械系统中离心转速调节器的运动德定性进行了分析，这种分析方法的优点就在于：建立系统运动微分方程的特征方程后，不必求解特征方程的根，只需知道根的符号就可判断系统的零解稳定性。

Analyse the root of equation, when the refractive index of film is less or greater than the refractive index of substrate; and draw up the graph of the equation root, gain the condition of single extreme or double extreme.

分别从薄膜小于衬底折射率和薄膜大于衬底折射率出发，分析了这两种类型薄膜的迭代求解情况，并描绘出了相应的图线，得到了出现单极值和双极值的条件。

Often, when the rider is having difficulty getting his heels down, the root cause is not really in the foot of the rider; as is often the case in equitation problems, the root cause lies somewhere else.

通常，当骑手放下脚跟有困难的时候，根本原因不在脚上；而是在其他地方，例如经常是由于平衡的问题。

The word 'radical' shares the etymological root to the word 'radish,' which means to get to the root of the problem.

这个词'激进'的股份词源根到Word '萝卜，'这意味着去问题的根源。

The quantitative modeling of root water exaction is difficult in research on soil-root hydraulic dynamics.

根系吸水的定量模拟是土－根系统水分动力学研究的难点之一。

When the time is fixed,the higher concentration of La3,the larger the ratio of electrolyte exosmosis,the severer destroy to root membrance. The rule of P and K+ in root exudation changed is similar to the ratio of electrolyte exosmosis.

同时根系分泌物中K~+和P含量的变化与电解质外渗率的变化规律相似，相关性分析表明其相关系数分别为0.963和0.915分别达到了极显著水平。

In order to solve the problem,We proposed a simple formula for computing paraxial travel time of single-way wave operator. The formula is based on the forward and inverse transform between time-space domain to frequency-wavenumber domain and from vector field to exponential manifold. The travel time are expressed as polynomials of the horizontal offset between the two points, and the single-square-root operator in frequency-wavenumber domain are expressed as polynomials of wavenumber. Coefficients of travel time polynomials and that of single-square-root operator are related each other and calculated by Lie algebraic integrand, exponential map and the saddle-point method.

针对此，基于时间空间域到频率波数域和向量场到指数流形上的正反变换，提出了计算单程波算子旁轴走时的简便公式，将走时表示成空间变量(地面点到地下相点的水平距离)的多项式，将频率波数域单平方根算子表示成波数的多项式，运用Lie代数积分、指数映射和鞍点法将走时多项式的系数与单平方根算子的系数联系起来，运用单平方根算子的系数计算走时多项式的系数。

It is essential to study the chemical components of rubber tree root exudates for root exudates research.

因此，分析研究橡胶树根系分泌物的物质组分，对于开展橡胶树的根际营养过程的研究、合理施肥具有重要意义，也具有重要的生态学意义。

Tea, feed, gegen, fernery, malt, liriope, isatis root, apn, leigong root, houttuynia cordra, leonurus japonicus, lotus leaf and mulberry leaves, etc.

茶叶、饲料、葛根、蕨根、麦芽、麦冬、板兰根、穿心莲、雷公根、鱼腥草、益母草、荷叶、桑叶等等。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。