查询词典 variation compass

Chromic trioxide and chromium hemitrioxide are determined with iodometry, the coefficient of variation of chromic trioxide is 0.056%, and the recovery of marked compound is 99.82-99.83%; the coefficient of variation of chromium hemitrioxide is 1.45%,and the recovery of marked compound is 98.55-99.26%; iron is determined by complexometric titration, the coefficient of variation of iron is 1.73%, and the recovery of marked compound is 99.12-99.23%;sulfate is determined by complexometric titration, the coefficient of variation of sulphate is 0.16%, and the recovery of marked compound is

Analysis Of The Chromium Electroplating Wastewater By Oxidation-reduction And Complexometric Titration-化学工程与工艺-本文采用氧化还原滴定法与络合滴定法对镀六价铬的废水中铬酸酐，三氧化二铬，铁和硫酸根的含量进行了测定：铬酸酐和三氧化二铬用碘量法测定，铬酸酐的变异系数为0.056%，加标回收率为99.82-99.83%，三氧化二铬的变异系数为1.45%，加标回收率为98.55-99.26%；铁用络合滴定法测定，其变异系数为1.73%，加标回收率为99.12-99.23%；硫酸根用络合返滴定法测定，其变异系数为0.16%，加标回收率为

Results The symptoms of PTSD had significant gender differences, girls scored higher than boys. Preearthquake life events obviously correlated to PTSD symptoms. PTSD total score of life events and the impact of significant demensions explained the PTSD scores 16% of the variation, 12% of the variation of reexperience, and to avoidance variation of 11%, 14% of the variation on hyper arousal.

结果 中学生PTSD症状有显著的性别差异，女生高于男生；生活事件与PTSD症状反应总分有显著相关；生活事件对PTSD总分及各维度的影响显著，解释了PTSD总分变异的16%，再体验变异的12%，逃避及麻木变异的11%，过度警觉变异的14%。

Amon g them , four polymorphic loci with inevident genetic variation made little cont ribution to genetic variation of this population and other ten polymorphic loci with evident genetic variation made great contribution to genetic variation of this population .

其中有14个酶基因座属多态，只有一个单态基因座（ME－3）。14个多态基因座中，4个基因座遗传变异小，对该天然群体的遗传变异贡献不大，其余10个基因座遗传变异丰富，对该天然群体的遗传变异贡献大。

Results］ Pass to solve the curvilinear analys is to the liquate linear , examine the 2 examples :YMDD variation stub in earlier in liver in B that had not yet any treatment sufferer, occupy 6.67%;Pulling the rice man settle the sufferer who cure to examine the 13 examples :YMDD variation stub in a year, occupying 26.00%;Pulling the rice man settles two years in treatment to examine the 25 examples :YMDD variation stub in the sufferer, occupying 50.00%, pulling the rice man settle to examine the 9 examples :YMDD variation stub with interferon in the sufferer of uniting the treatment, occupying 45.00%.

结果］通过对熔解曲线的分析，在未经任何治疗的乙肝初发患者中检出YMDD变异株2例，占6.67%；拉米夫定治疗1年的患者中检出YMDD变异株13例，占26.00%；拉米夫定治疗两年患者中检出YMDD变异株25例，占50.00%；拉米夫定和干扰素联合治疗的患者中检出YMDD变异株9例，占45.00%。

In degraded PSM matching classification, errors modification method of degraded PSM is presented and the matching tensor of every canonical scattering centers is given. In Chapter 4, the theory of wideband millimeter-wave radar target identification is introduced. It is indicated that, for HR radar target identification, description of temoral relations among features and pattern recogntion adaptive to variation of target angles are of key importance. A rule-based pattern recogniton method of sequential reasoning is proposed, which uses a series of rules to describe relations of features variation caused by target angles variation and has the advantages of adaption to unrandom variation and false probability control in classification over traditional statistical pattern recognitiop method. Feature extraction is crucial step in target identification. In range profiles identification application, features are extracted by means of range domain pre-processing algorithm, spacial and amplitude visual computation directly from range profiles and transform algorithm based on range profiles. Visual or transformed features are either sufficiently convinced or necessarily convinced and both of them are effective and robust to range profiles identification.

在第四章，首先对宽带毫米波体制背景下目标识别方法的一些特点进行了阐述并指出，在毫米波雷达目标识别中，特征之间动态关系的描述以及能适应目标姿态角变化的模式识别方法的研究乃是要解决的关键问题；进而提出了一种基于规则库的序贯推理模式识别新方法，在这种方法的研究中，主要包括序贯推理规则库的规则排列与特征选用顺序以及规则库的收敛等问题；这种方法克服了传统的统计模式识别方法特征利用效率不高、难以适应特征值的非随机性变化的缺点，把姿态角变化所引起的特征的变化用一系列规则加以表示，其优点是能适应特征值的非随机性动态变化，并能控制分类过程中的差错概率α；特征抽取是目标识别中的关键步骤，在基于目标距离像的特征抽取方法研究中，提出了距离空间域的预处理算法、距离空间域与幅度域的直观特征抽取方法以及基于目标距离像变换分析的特征抽取方法。

The character of surface radiation and energy expended over soil temperature variation is that the temperature variation at surface, 5cm depth and 10cm depth are approximately sine curve on clear and cloudy day while this way the temperature variation at 20cm depth shows small extent anti-phase variation and the temperature under 50cm is no diurnal. In contrast, the temperature at 5m, 10cm and 20cm shows linear decrease and the soil-surface temperature is concaved on rainy day.

地表辐射和能量耗散反映在土壤温度变化上的特征是晴天和阴天地表、5cm、10cm的温度变化表现为准正玄曲线，20cm深处的温度变化呈现出幅度很小的反位向变化，50cm以下地温已不存在日变化特征；雨天5cm、10cm和20cm的温度呈线性递减，地表温度表现出由降雨引起的凹陷现象。

Imamura (Ref. 1 , p. 346), a well-known seismologist, wrote as follows in 1937:" attacked with every resource at their command the various problems bearing on earthquake prediction, such as earth tiltings and earth pulsations, variation in the elements of terrestrial magnetism, variation in underground temperatures, variation in latitude, secular variation in topography, etc., but satisfactory results were not obtained".

Imamura〔参考文献26第346页〕，著名的地震学家，1937年写道∶'［委员会］利用他们能够调动的一切资源对地震预测有关的所有问题进行研究，包括地倾斜、地跳、地磁因素的变化、地下温度的变化、纬度的变化、地形学方面长期，等，但是未能获得令人满意的结果。

This paper introduces the geneses and developing of digital compass in brief. Also expatiates digital compass s background theory , including airmanship spatial orientation theory and attitude dynamics etc.

本文简要介绍了数字航向仪的起源与发展状况，并介绍了数字航向仪的相关理论背景，包括航天导航技术、空间定位学和姿态动力学等理论。

James Gould and his colleagues have shown that honeybees make use of at least three different sets of back-up cues in addition to their Sun compass; these include the plane of polarization of light, a magnetic compass and a memory for the Sun's position at different times on previous days.

詹姆斯。古尔德及其同仁都证实，除了太阳罗经以个，蜜蜂至少利用了三套不同的后备信号，包括光的偏振平面，磁罗盘及对几天前太阳在不同时间的位置的记忆能力。

This course consists of three parts : A.The fundamental theory of gyroscopes. a.Kinematics and dynamics of gyroscopes, consisting of Coriolis acceleration, theorem of angular momentum, Euler's dynamical equations, dynamical explanation of gyroscopes' properties. b.Gyroscopes' motion equations, including the complete equations, technical equations and precession equations derived from Euler's dynamical equations, and the technical equations derived from static vs. dynamic method. c.Analysis of gyroscopes' motion. d.Coordinate systems and their mutual transformation. e.Gyroscope drift and its measurement. B.Principle of typical gyroscope instruments, such as gyro compass, gyro north finder, gyro horizon, platform compass, rate gyroscope and integrating gyroscope. C.Principles and applications of new-type gyroscpes, such as electrically suspended gyro, ring laser gyroscope, fiber optical gyroscope, hemispherical resonator gyro, dynamically tuned gyroscope and micro inertial sensors.

本课程教学内容由三部分组成：陀螺仪的基本理论，内容包括：陀螺力学基础（哥氏加速度、角动量定理和欧拉动力学方程、陀螺特性的力学解释）；陀螺仪运动方程和运动分析（用欧拉动力学方程建立完整方程、陀螺仪运动的技术方程和进动方程，用动静法建立技术方程）；坐标系及其变换；陀螺仪的漂移及其测试；典型陀螺仪器（包括陀螺罗经、陀螺找北仪、陀螺地平仪、平台罗经、速率陀螺仪和积分陀螺仪等）的工作原理；新型陀螺仪（包括静电陀螺仪、激光陀螺仪、光纤陀螺仪、半球谐振陀螺仪、挠性陀螺仪、微机械陀螺仪等）的原理及应用。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。