查询词典 F-22

Assistance to the Air Force to carry out the expansion. After the war, into the development phase of the restoration, completed basic combat training and logistical support systems, combat aircraft to achieve the beginning of jet. 60 era for the expansion and gradually equipped with F-86D, F-5A and F-4F fighter. 80s equipped with F-5E/F, F-16 fighter aircraft, air defense automated alert system officially running. In July 1991, the Army air defense artillery and troops under the command of the Air Force formed to form a radar, aircraft, surface to air missile (anti-aircraft) integrated air defense system. 90, to receive from the U.S. military operational command, weapons and equipment have been developed, the first home-made aircraft KF-16 aircraft factory, F-16 fighters equipped with AIM-120 advanced air-to-air missile in the distance, procurement from France,"Northwest Wind "-air missile. 2002 selection of a new generation of F-15K fighter jets.

战后，进人恢复发展阶段，基本建成作战、教育训练和后勤支援系统，作战飞机开始实现喷气化。60年代进行扩编，逐步装备F—86D、F—5A和F—4F型战斗机。80年代装备F—5E/F、F—16型战斗机，自动化防空警戒系统正式运行。1991年7月，陆军防空炮兵司令部及所属部队划归空军建制，形成雷达、飞机、地空导弹一体化防空体系。90年代，从美军接收作战指挥权，武器装备也得到较大发展，首架自制KF—16型飞机出厂，F—16型战斗机装备AIM—120型先进中距空空导弹，从法国采购"西北风"式地空导弹。2002年选用F—15K新一代战斗机。

Let F=LF be a s-closed local formation such that every minimal non-F-groups is solvable. It is proved that 1 If every cyclic subgroup of of order 4 and every minimal subgroup of G are contained in, then G is a F-group. 2 If there exists a normal subgroup N of G such that G/N∈F and every cyclic subgroup of N of order 4 is weakly c-normal in G and every element of N of prime order is contained in Z(superscript f subscript ∞), then G is a F-group.

设F=LF是一个子群闭的局部群系，满足每个极小非F-群是可解群，证明了：1如果G的任意极小子群和任意4阶循环子群都含于Z中，那么G是F-群；2如果存在G的正规子群，使得G/N∈F，且N的任一4阶循环子群在G中弱c-正规，N的任一素数阶元含于Z中，那么G是F-群。

In the last chapter, on the basis of theories in paper [4, 5], the notions of strong mixing, weak mixing, generator and expansion of the variable-parametric dynamical system are introduced, it turns out that in variable-parametric dynamical system strong mixing implies weak mixing and then implies transitivity; it is proved that if and both are variable-parametric dynamical system, F conjugates with G , the members of F are communicate with each other and the members of G are also communicate with each other, what's more, they are both homeomorphism, then F is strong mixing implies G has the same properties; futhermore, we prove that F is strong mixing implies F Devaney chaos in the sense of modification in variable-parametric dynamical system and that F Devaney chaos in the sense of modification if and only if G Devaney chaos in the sense of modification when semi-conjugate with and they both are communicate and homeomorphism; at last, we illustrate that F has generator if and only if it has weak generator, and we also prove that if F is expansion, then F has generator.

在第三章中，我们在文[4，5]的基础上，提出了变参数动力系统拓扑强混合、拓扑弱混合以及变参数动力系统的生成子、扩张的概念；证明了变参数动力系统拓扑强混合蕴含拓扑弱混合，进而蕴含拓扑传递；证明了：如果，为两个变参数动力系统，F与G拓扑半共轭，且F两两可交换，G两两可交换，它们均为同胚映射，那么F拓扑强混合，则G也有同样的性质；本章还证明了变参数动力系统拓扑强混合蕴含F在修改的意义下Devaney混沌；在此基础上得出了：如果变参数动力系统与变参数动力系统拓扑半共轭，它们都两两可交换，并且它们均为同胚映射，那么F在修改的意义下Devaney混沌当且仅当G在修改的意义下Devaney混沌；得出了F有生成子当且仅当F有弱生成子；如果F是扩张的，则F有生成子。

Let G = V(G,E be a simple graph with |V| vertices and |E| edges. Let |V|= p,|E|= q, if there exists f: V →{1,2,...,p} be an injective mapping, and define an inducedfunction f":E→{1,2,...,q} by setting f"=|f-f| for all∈E. If f maps E onto {1,2,...,q}, then f is said to be a Skolem-graceful labeling of G, the graph G is said to be a Skolem-graceful graph.

对一个给定的简单图G=V(G，E，|V|和|E|分别是图G的顶点数和边数，令|V|=p，|E|=q，如果存在一个一一映射f：V→{1，2，…，p}，使得对所有边∈E，由f′=|f-f|所导出的映射函数f′：E→{1，2，…，q}是一一对应关系，则称f是图G的一个Skolem优美标号，图G被称为Skolem优美图。

Concerning value distribution theory, Q.C.Zhang got the following result:Let f be a non-constant meromorphic function in C, b is a finite non-zero complex number, if f and f" CM share 0 and IM share b, then: f ≡ f", or f =(2b)/(1-ce-2z) here c is any non-zero constant.

在值分布理论中，张庆彩得到了这样的结果：设f是复平面上的非常数亚纯函数，b是非零的有限复数，若f和f′CM分担o且IM分担b，则： f≡f′，或者 f=2b/1-ce-2z ，其中c是任意非零常数。

In chapter 1, one type of maximal subgroups in symplectic groups overpolynomial rings are obtained. Let F be a field, R = F be a ring of polynomial in one variable over F, m be a positive integer, f eF and S be the ideal of R generated by -f, We define:, then G is a maximalsubgroups of Sp(2m,R).

在第一章中，得到了多项式环上辛群的一类极大子群：设F是一个域，R=F是域F上关于λ的一元多项式环，m是一个正整数，f∈F，S是R的由λ-f生成的理想，则是Sp(2m，R)的一个极大子群。

The results showed that the evaluation of the current fishery resources was influenced by uncertainties in estimated F0.1, F and F, and by decisions of the managers with different confidence levels. The probability of being overfished reduces with the increase of uncertainties in F0.1, F and F, and decision confidence levels. Uncertainties in growth related parameters are the main contributors to the estimated uncertainties for F0.1 and F for the crimson sea bream fishery. The uncertainty of natural morality has limited influence on the estimated uncertainties of F0.1 and F.

结果表明：二长棘鲷渔业资源状态评估受到F0.1、F、F估计中的不确定性和管理者选取的决策置信水平的影响，二长棘鲷渔业被确定为过度捕捞的概率随着F0.1、F、F估计中不确定性和置信水平的增加而下降；F0.1和F估计中的不确定性主要由生长参数的不确定性引起，自然死亡系数的不确定性对F0.1和F估计中的不确定性的影响是有一定限度的。

In 2004 Zhang Zhongfu presented the concept ofadjacent vertex distinguishing total coloring whose content is: Let G be a connectedsimple graph with order at least 2, k be a positive integer and f be a mappling fromV∪E to {1,2,...,k}. Let C={f}∪{f|uv∈E,v∈V}for all u∈V. If (1) for any uv, vw∈E,u≠w, we have f≠f;(2) for any uv∈E, we have f≠f, f≠f, f≠f,then f is called a k-proper total coloring of graph G.

第三章和第四章主要研究了两种联图的邻点可区别全染色，邻点可区别全染色的定义是张忠辅在2004年提出来的，其内容为：设G是阶至少为2的简单连通图，k是正整数，f是V∪E到{1，2，…，k}的映射，对任意u∈V，记C={f}∪{f|uv∈E，v∈V}。

As applications, we prove the following results: If / has pointwise pseudo-orbit tracing property, for any k ∈ Z+, and fk is chain transitive, then for any k ∈ Z+, fk has open set transitive ; If f has pointwise pseudo-orbit tracing property, and for any n ∈ Z+,fn is chain transitive, then f has sensitive dependence on initial conditions; If f is open set mixing and has pointwise pseudo-orbit tracing property, then f has property P; Let f :→ be a homeomophism, then f is pointwise pseudo-orbit tracing property if and only if the shift map σf is pointwise pseudo-orbit tracing property.

作为应用，证明如下结论：若f具有逐点伪轨跟踪性质，且对任意k∈Z+，fk为链转换的，那么对任意k∈Z+，fk为开集转换；若f具有逐点伪轨跟踪性质，且对任意n∈Z+，fn为链转换的，则f具有初始敏感依赖性质；若f为开集混合的，且具有逐点伪轨跟踪性质，那么f具有性质P；设f：→是同胚映射，那么f具有逐点伪轨跟踪性质当且仅当移位映射σf具有逐点伪轨跟踪性质。

In the second part of this work, a computor program is developed to calcalate〓L〓energy levels, reduced matrix elements, crystal field energy levels, oscillator strengths of f-f transition and theoretical f-f absorption spectra of f-ions. The calculation results of the f-f absorption spectra of Nd in water coordination sphere and H di (2-ethylhexyl phosphinic acid coordination sphere with different symmetric structure are shown and compared with observed spectra.

在第二部分中，编制了计算f离子的〓L，能级、约化矩阵元、晶体场中Stark能级分裂、f-f跃迁振子强度及f-f理论吸收光谱的计算机程序，以此程序分别计算了Nd在不同结构对称的水配位层及烷基磷酸配位层中的f-f吸收光谱，通过与实验谱比较，识别了可能的配位层结构，并讨论了f-f跃迁的强度机理。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。