It has only emerged when chickens and turkeys are infected by strains of h5n1 of low pathogenicity from waterfowl , and that strain mutates into the highly pathogenic form within the poultry host , leading to an avian flu epidemic 鸡只和火鸡从水鸟身上感染致命性低的h5n1病毒，病毒在家禽宿主体内变种成高致病性病毒，引致禽流感疫症爆发。
By the sandwichbell in screening shadow , lydia her bronze and rose , a lady s grace , gave and withheld : as in cool glaucous eau de nil mina to tankards two her pinnacles of gold . the harping chords of prelude closed 一位褐发淑女的娴雅派头，忽隐忽现而金发挽成高髻沉浸在冰凉而银光闪闪的一片淡绿蓝色150中的米娜，在两位举着大酒杯的顾客面前也是这样。
The basic principle goes like this : taking the multivariate data during the complex production process as input - output information to study , extracting the variables which plays an important role on production result , and then expanding to high - dimension measurement space 基本原理是：将复杂生产过程的多元数据作为输出一输入信息进行研究，从众多的变量中抽取出对生产结果起重要作用的变量，并依此张成高维测量空间。
The exploitation and utilization of biomass energy is an effective method for relieving the pressure of conventional energy resources shortage . the technology of biomass pyrolysis can convert low - quality biomass into bio - oil that has the character of high - quality , high energy density , cleanness and zero carbon dioxide emission 大力开发生物质的热裂解制油技术，可将低品位的生物质能转化成高品质的、高能量密度，清洁、无污染而且二氧化碳排放为零的生物油液体燃料。
What the practical problems is often gotten is a single variable time series which has a time interval of t , reflect by a lot of interactive physics factor , containing the mark of all variates participating in movement , traditional time series analysis is to analyse going from this array to the form directly it ' s time develops , one dimension analysis loses useful information , the characteristics of phase space reconstruction method is to construct one dimension scalar quantity to high dimension vector , prop the geometry space of the state , show all dynamical information of system in phase space . the characteristic that just constructs again according to the phase space in this text , analyse the time series of responding , use the relevant knowledge of symbol dynamics and reconstruct phase space , put forward a kind of relation degree analysis method of the systematic mathematics model which has theory basis , so reach the correction of calculation mathematics model , make it accord with the actual systematic state 实际问题中常常得到的是一个时间间隔为t的单变量的时间序列，它是许多物理因子相互作用的综合反映，蕴藏着参与运动的全部变量的痕迹，传统的时序分析是直接从这个序列去形式地分析它的时间演变，一维分析必然丧失许多有用信息，相空间重构方法的特点是把一维标量数据构造成高维矢量，支起状态的几何空间，在相空间中展示系统全部动力信息。本文正是根据相空间重构的特点，对响应时间序列进行分析，利用符号动力学、重构相空间等方法，提出一种有理论依据的系统数学模型关联度分析方法，从而达到修正计算数学模型，使其更符合实际系统状态的目的。
By taking the miniature ceramic rod which is easily to machine high accuracy as sensitive structure , and by printing and polarizing six belt - shaped electrodes above it to constitute three pairs of electrodes , this paper designed package and the phase - sensitive detection circuit in the system so that it effectively reduced the sensitive structure size and improved its processing precision to realize the angular rate gyro microminiaturization 首先采用易于加工成高精度的微型陶瓷棒作为敏感体，在其上印刷成六个带状电极并予以极化构成三副电极对，然后设计了封装及相敏检波电路，从而有效地减小了敏感结构的尺寸，提高了其加工精度，实现了角速率陀螺微型化。
