查询词典 direction constant

As the sample of Yuanliangshan tunnel in Chongqing-Huaihua Railway, based on the full analysis of groundwater specimens, five chemical equations are designed to calculate evaluating data by the relation of activity, equilibrium constant and Gibbs free energy. According to the two criterion of partial pressure of carbon dioxide and reaction direction, the result calculated shows the groundwater has weak corrasion to carbonate rocks, which should be avoided to do harm to tunnel.

以渝怀线圆梁山隧道为实例，通过隧道内地下水取样进行了全分析，其中CO(上标 2-下标 3)离子作为"中间过渡态"离子，由于只存在微小量未被检出；使用水质分析结果数据设计了五个化学反应方程式，通过活度、反应平衡常数及吉布斯自由能之间关系进行热力学计算，依据二氧化碳气体分压P(下标 CO2)与反应进行两个方向化学反应判据开展分析，结果表明地下水具有弱侵蚀性，在隧道工程中应避免其引起危害。

The main contents are listed as follows: 1. Nine square concrete-filled thin-walled steel tubular columns with stiffeners (six specimens with longitudinal stiffeners in two directions and three specimens with longitudinal stiffeners in one direction) have been experimentally investigated under combined constant axial load and lateral cyclic load in order to get their hysteretic behavior.

具体进行了以下几方面工作：(1)共进行了9根设肋方形薄壁钢管混凝土柱(6根双向设纵向加劲肋、3根单向设纵向加劲肋)在恒定轴力和往复荷载作用下的滞回性能试验研究。

A constant need for 70% of its horizontal contraction, and business card printing and membership card making direction 90 degrees angle.

必然必给其横向关上70%，也不离是与制卡和会员卡制作不本的目的不败90度角度。

The calculation of initial alignment direction cosine matrix between SINS body frame and navigation reference frame is expanded into three parts:(1) the DCM between i0 frame and n frame is easily obtained via local geographical coordinates and initial alignment time;(2) by expressing SINS specific force equation in b frame and by the aid of external velocity log, the constant DCM from i(subscript 0) frame to i0 frame is achieved;(3) attitude updating using gyro samples gets the DCM between b frame and i(subscript b0) frame.

将捷联惯组坐标系与导航坐标系之间的初始对准姿态矩阵的实现分解为三步骤：(1)通过地理位置和初始对准时间求解i0系至n系的变换矩阵；(2)通过惯导比力方程变形，引入刚速仪速度辅助，求解从i(下标 b0)系至i0系的常值变换矩阵；(3)使用姿态更新算法实时计算b相对于i(下标 b0)系的变换矩阵。

On moving base, a new initial alignment algorithm for strapdown inertial navigation system is proposed. In the algorithm, two special inertial frames, the initial-time inertial frame (i0 frame) and the initial-time SINS body inertial frame (ib0 frame), are defined and are selected as calculation reference frames, then, the calculation of initial alignment direction cosine matrix is expanded into three parts:(1) the DCM between i0 frame and the navigation frame will be easily obtained via local geographical coordinates and initial alignment time;(2) attitude updating using gyro samples gets the DCM between SINS frame and ib0 frame;(3) by explaining SINS specific force equation in SINS body frame, the relation between velocity log, accelerometer measurement and gravity acceleration is established to achieve the constant DCM from ib0 frame to i0 frame.

在运载体运动情况下，提出了一种适用于捷联惯导系初始对准的新算法，该算法以惯性空间为参考基准，即建立了初始时刻惯性坐标系（i0系）和初始时刻捷联惯组惯性坐标系（ib0系）两个惯性坐标系，将初始对准姿态矩阵的实现分解为三部分：（1）通过地理位置和初始对准时间求解i0系至导航坐标系的变换矩阵；（2）使用姿态更新算法实时计算捷联惯组相对于ib0系的变换矩阵；（3）通过惯导比力方程变形，获得测速仪辅助测量、加速度计输出和重力加速度之间的关系，从中可以求解出从ib0系至i0系的常值变换矩阵。

A line traced by a point traveling in a constant direction; a line of zero curvature.

一个点在一个方向上移动所产生的线；有零个弯曲的线。

A line traced by a point traveling in a constant direction; a line of zero curvature

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Surely, it isn\'t the physical time which is constant velocity, linear, one direction ahead, it is a social time.

当然这个时间并非流俗意义上的匀速流淌，线性的，一维向前发展的刻度的自然时间，它是一种人类自身的时间——社会时间。

Some virtual interfere sources are set on the look-in domain, the proposed algorithm adjusts the intension of them iteratively and makes the designed main-lobe on arbitrary direction inosculated the reference main-lobe, then the steering-invariant constant beamwidth beampattern is obtained after some iterative calculations.

在整个观察区域内设置若干虚拟干扰源，用迭代方式不断调整干扰源强度，使任意波束指向上的波束主瓣都与相应的参考波束主瓣吻合，最终获取方向不变恒定束宽波束图。

Rectifier motor - so excited DC generator string for AC motor, and the fait accompli of such motors, due to alternating current in the magnetic field and the armature circuit, while turning, the moment the direction of Constant Couple remain unchanged, it is turning non-stop.

整流电动机--使串激直流发电机，作交流电动机用，即成此种电动机，因交流电在磁场与电枢电路中，同时转向，故力偶矩之方向恒保持不变，该机乃转动不停。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。