查询词典 M.A.

Mainly introduce the construction based on m-sequences over extension Galois field GF , and the constructions of optimal families of one-coincidence sequences based on m-sequences. In Chapter 5, we present a model for construction of optimal families of FH sequences based on GMW sequences.

第4章讨论基于m序列构造跳频序列族的各种模型，重点阐述我们提出的基于GF上的m序列构造最佳跳频序列族的模型和基于m序列构造一次重合序列族的几个模型。

Methods Three groups of male Kunming mice were exposed to different concentrations (0, 1.34 and 4.02 mg/m^3) of gaseity formaldehyde, 4 h/day, for 7 consecutive days, and their behavior when they learned to perform a water labyrinth task and hippocampal neurotransmitters levels were tested.

选择雄性昆明小鼠30只，随机分为对照组、1.34mg/m^3染毒组、4.02mg/m^3染毒组，每组10只，分别置于3个216L的透明玻璃柜中染毒，对照组通以室外洁净空气，1.34、4.02mg/m^3甲醛染毒组分别通以1.34、4.02mg/m^3的甲醛气体，每天染毒4h，共7d，测定染毒后小鼠在通道式水迷宫中学习成绩及海马神经递质含量。

In terns of the general theory of linear algebra, reduced matrix for the operator M are similar to a Jordan matrix J, namely M = S~lJS .

当约化矩阵M不可对角化时，根据线形代数的一般理论，这时约化矩阵M与一个约当矩阵J相似，即M=S~(-1)JS，其中S是关于k，q_0的任意可逆矩阵。

To investigate vertical competition in the two-echelon serial supply chain, a M/M/1 queue model is established, the efficiency, firms'decision variables and the customer service level between centralized and decentralized control are compared; a supply chain horizontal competition model is established, the impacts of horizontal competition on performance of the supply chain are analyzed by using theoretical and numerical methods.

针对两级串联供应链中的垂直竞争问题，建立了M／M／1排队模型，对集中控制与分散控制下，供应链的效率、厂商的决策变量和用户服务水平进行了比较分析；建立了供应链水平竞争模型，采用理论分析和数值计算方法，研究了水平竞争对供应链绩效的影响。

In this paper we obtain Jorgensen s inequality of isometry group M of Pinched manifold X and a geometric characteristic of nonelementary subgroups of M.

本文建立了 Pinched流形 X上等距群 M中的Jorgensen型不等式；证得了M中非初等群的一个几何特征；得到了 M中子群的两个离散准则。

Firstly, we prove a proposition : the leading coefficient regarded as a polynomial in q~n, q~(1/2 of the recurrence is not equal to zero for all n ≥ [m/2] + 1, where m is the degree in q~(1/2) of the leading coefficient.

首先，我们证明了一个命题：迭代关系的首项系数关于q~n，q~(1/2的多项式对所有的n≥1[m/2]+1均不为零，其中m为首项系数中q~(1/2)的次数。

Planet reduction shown in figure 6. Loose nut 6 "nut + washer + anti-loose nut". The explored view is Adjust torque 350~400N.m, rotate hub 13 at the same time. 5 and a radial force F=70N crease, hub can rotate free. Then fix lock washer into nut 6, fasten loose nut with torque 400N.m and make spacer control 0.05~0.15mm.

调整时，用 350~400N.m 力矩旋紧螺母 6，同时转动轮毂 13，使两轴承处于正确位置，然后，稍旋松螺母 6，在轮辋螺栓处施加一个切向力 F=55N.m，此时轮毂应能自由转动，然后装上止动垫片 5，将其卡爪折入螺母 6 的防转槽内，再用 400N.m 的力矩旋紧防松螺母，使轴向间隙控制在 0.05～0.15mm 之间。

Across the altitudinal gradient, a total of 12635 individuals belonging to 6 phyla, 15 classes and 33 orders were collected. With increasing altitude, the density of soil fauna decreased, but the group number was less affected. There was a higher co-occurrence of soil faunal communities along the altitudinal gradient, and Nematoda, Acarina, and Collembola were the dominant groups. Below the altitude 370 m, the Shannon-Wiener index, Pielou index, and Margalef abundance index increased with increasing altitude; while above the altitude 370 m, the Shannon-Wiener index and Pielou index decreased but the abundance index increased after an initial slight decrease.

结果表明：土壤动物密度随海拔升高而下降，类群数受海拔影响较小，各海拔群落的共有度较高，优势类群基本均为线虫、蜱螨目和弹尾目；Shannon-Wiener指数、Pielou均匀度指数及Margalef丰富度指数仅在海拔370 m以下随海拔升高而增加，而在海拔370 m以上，Shannon-Wiener指数与Pielou均匀度指数下降，丰富度指数在略有下降后再次上升。

At the cellular level, As〓O〓 triggers apoptosis and a partial differentiation of APL cells in a dose-dependent manner, that is, triggering apoptosis at relatively high doses (0.5-2μM) and inducing partial differentiation at low concentration (0.1-0.5μM) after relative long time treatment.

体外研究发现，在细胞水平，As〓O〓可诱导早幼粒细胞凋亡与部分分化并呈剂量依赖性，即大剂量(0.5-2μM)As〓O〓诱导APL细胞凋亡，而低剂量(0.1-0.5μM)As〓O〓长时间作用后则诱导APL细胞部分分化。

In order to achieve a high inductance value and Q-factor,UV-LIGA,dry etching technique,fine polishing and electroplating technique are adopted.

为了获得高电感量和Q值，采用UV-LIGA、干法刻蚀、抛光和电镀技术，研制的电感大小为1500μm×900μm×70μm，线圈匝数为41匝，宽度为20μm，线圈之间的间隙为20μm，高深宽比为3.5∶1。

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。