作用的

The formation mechanism of the absolute instability and gyrotron backward wave oscillations is analyzed, and the methods to suppress the parasitical modes are discussed.The nonlinear theory model of gyro-TWT is consummated by considering the influence of tapered magnetic field and waveguide radius, electron velocity spread, and waveguide loss on electron beam-wave interaction. The large-signal characteristic of gyro-TWT, such as launching loss and absolute instability, are also analyzed in detail. This work establishes the foundation for the development of a gyro-TWT amplifier.

重点研究了两段损耗波导结构和损耗陶瓷结构回旋行波管中的电子注-波互作用，分析了绝对不稳定性和回旋返波振荡的形成机制和抑制寄生模式的方法；完善了回旋行波管的非线性理论模型，并考虑了磁场和波导半径渐变、速度零散、波导损耗等因素对注-波互作用的影响；详细分析了发射损耗、相位稳定性等回旋行波管的大信号特征，为回旋行波管放大器的研制奠定了基础。

The traditional distinction based on the matrix attribute reduction algorithm analysis, for distinction in the matrix "repeat" Too many elements, these "duplicate" elements not only in solving attribute reduction in the process does not work, But also reduce the time efficiency by improving the shortcomings that distinction in the matrix structure in the process of using Proposition calculus in the absorption of the law removed the distinction between the functions of the non-functional "repeat"element, a property Reduction of improved algorithm RADM, improve the efficiency of the attribute reduction.

通过对传统的基于区分矩阵的属性约简算法进行分析后，针对区分矩阵中"重复"元素过多，同时这些"重复"元素非但在求解属性约简的过程中不起作用，而且还降低时间效率这一缺点进行了改进，即在构造区分矩阵的过程中，利用命题演算中的吸收律去掉了在区分函数中不起作用的"重复"元素，提出了一种属性约简的改进算法RADM，提高了属性约简效率。

The accumulation of asphaltene in the system depends on the physical structure of ...

在沥青质分子单元叠积过程中，由沥青质的杂原子因素、过渡金属因素、芳香环结构因素和脂肪性侧链因素共同决定的化学作用的影响是第一位的，其中芳香环结构因素和杂原子因素的影响最为显著，而由稠油体系不稳定性构成的物理作用的影响则居于次要地位。

The poly-culture biomass of silver carp and bighead carp played an important role during biomanipulation in case of no extraneous nutrient addition, which depended on the actual productivity of water body. So it is favorable to improve biomanipualtion of fish to choice the stocking biomass according to productivity of water body.

鱼类的生物量对其生物操纵作用的发挥有重要的影响，水体中鲢、鳙适宜生物量的选择是由水体中生产力水平决定的，根据水体的实际生产力水平来选择鲢、鳙的生物量，有利于其生物操纵作用的发挥。

LINKED TO THE question of method is the issue of the role of the state, in particular the autonomous role that can be played – under certain conditions, for a certain period of time – by a Bonapartist state consisting of a powerful apparatus and army, together with a powerful ruling party, in the case of China.

与方法的问题联系在一起的是国家作用的问题，特别是由强大的国家机器和军队以及一个强大的执政党组成的波拿巴国家-在特定条件下，在一定的时间内-可发挥的自发的作用。

It is this difference that cased the evolvement of the industrial structure.

自改革开放以来中国经济快速增长，高增长的同时产业结构发生了重大的变动，本文采用结构分解方法利用投入产出表对转型期中国产业发展的动力进行研究，发现最终需求的增长是中国产业发展的最重要动力，同时，不同的最终需求明细项目对各产业有不同的拉动作用，正是这种拉动作用的不同使各产业获得了不同的发展速度并最导致了产业结构的改变。

Results showed that TDI induced toxic action on spermatogenic cell,while the chondriosome was its target within the length and concentrations.

结果表明：在本实验染毒时间和染毒剂量范围内，TD I对雄性的生殖毒性主要表现为对各级生精细胞均有一定的毒性作用，作用的靶点是细胞内的线粒体；TD I通过影响各种酶的活性，干扰了睾丸组织的有氧代谢和无氧供能，抑制了细胞对能量的利用，损伤了各级生精细胞，导致生精上皮不可逆的损害，从而造成了其对雄性生殖系统的损伤；TD I对雄性生殖细胞的核酸代谢以及DNA合成有一定影响。

The mineral chemistry, trace elements and Sr-Nd isotopic geochemistry of different types of deep-seated inclusions indicate that Group Ⅰinclusions in western Shaudong could be the relicts of high degree of partial melting of the mantle-derived peridotites and then subjected to mantle metasomatism; the dunite and harzburgite in Group Ⅱ inclusions could be resulted from the metasomatism of silica-rich melts in the upper mantle; the olivine-pyroxenite and pyroxenite in Group Ⅱ and Group Ⅲ inclusions could be magmatic cumulates derived from magma underplating in the upper mantle.

不同结构类型深源岩石包体的矿物化学、元素和同位素地球化学研究表明，鲁西具有变质变形结构特征的橄榄岩类岩石包体为岩石圈地幔橄榄岩部分熔融后的残留体，其后又遭受了地幔交代作用的改造；具有变质变形结构，并叠加有矿物反应结构的纯橄岩和方辉橄榄岩类包体为古老岩石圈地幔被富硅质熔体改造的结果；具有残留岩浆结晶结构的橄榄岩、橄辉岩类岩石包体以及具有变晶结构或堆晶结构的辉石岩类包体为地幔更早期岩浆作用的在上地幔的堆积体。

In this chapter, I point out the location of Lijiang Region and Dayan in the first place, and then analyze the natural environment of Dayan from different angles including physiognomy, climate, biologic resources and tour resources. After it, I study the cultural and social environment of Dayan by the introduction of the ethnologic structure, faith, traditional culture, regime, and folk-custom in this area, which set a background to the following discussion.

本章首先指出大研古镇的外在形态是隐藏其后的政治、经济、宗教、文化等各种因素共同作用的结果，接着分析了大研古镇的历史沿革，即不同历史时期中对古镇发展起决定性作用的主要力量及其所导致的古镇面貌的主要改变，以及大研古镇的人文内涵及其演变，即古镇受不同类型文化渗透、影响而具备的特征属性。

While applying OUS to the analysis of Yupingfen powder, I extracted and separated chemical components of each herb in the way of 3- routes approach with referrence to the variable results of the Indian ink clearance function of reticulo-endothelial system in mice. This experiment reflects YPFP's representative pharmacological effect of enhancing immunity.

在玉屏风散的实践中，依照三个分离路线对各药材的化学部位分别进行提取和分离，并以其功能主治中具代表性的&对机体的免疫调节作用&为重点，选择能够反映免疫功能增强作用的小鼠碳廓清药理实验结果为参照，历经三步实验，初步确定了玉屏风散的有效部位单元群。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。