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It is predicted by the Aspect Hypothesis that the perfective and imperfective aspect marking in native language and learner's interlanguage is constrained by the lexical aspect of the verb.

第二语言时体系统的习得是二语习得研究的一个核心领域。动词的情状体是影响二语时体习得的重要因素之一。情状体假设一方面揭示了语言中的一个普遍语法现象，即体范畴中的情状体特征；而且发现了这一语法现象对语言习得的作用。

The constrained low-cost restricts the improvement of government performance, other cost and implicit cost increases idle cost, the development of government transformation and civil society organization is slow, and constitutional problems still exist. These factors are the primary reasons which lead to low performance of the government administrative cost control in underdeveloped areas.

低成本制约了政府绩效的提升，制度外成本和隐性成本增加了无效成本，政府转型和公民社会组织发展缓慢，制度性问题等依然存在等，是导致落后地区地方政府行政成本支出绩效低下的主要成因。

Then this thesis presents another SLAM algorithm-the Relative Map Filter, The RMF is however disadvantaged by the inability to guarantee consistency of the estimated relative map. The following sections introduce a new navigation filter - the Geometric Projection Filter or GPF. The consistency of the estimated relative map is enforced by the application of the constrained estimator to an inconsistent relative map produced by a standard RMF.

然后介绍了SLAM问题的结构，分析了绝对地图滤波器的性质，介绍另一种解决方法—相对地图滤波器，但是相对地图滤波器产生不一致的相对地图，因此在相对地图滤波器的基础上应用约束估计产生一致的相对地图，这就是几何投影滤波器，从而有效的解决了SLAM问题。

But,I have a indistinctly artificial feeling always,it makes me constrained,so I cannot free my taciturn,my melancholy,my lonely and a little bit of cheerfulness.

可是总有一种隐隐的不自然感，使我无法肆意，挥洒我的沉默，我的抑郁，我的孤独和一些小小的快乐。

In order to provide references for the ground separation tests and the separation system design, characteristics of the constrained and centroid biased on-orbit satellite separation were analyzed in inertial reference frame.

为了给分离地面试验和分离系统设计提供依据，在惯性参考系中分析了筒式偏心在轨分离问题的运动特性。

The conditions that guarantee the existence of constrained points and segments in Voronoi mesh are presented, which puts forward a novel two-dimensional conforming Voronoi mesh refinement algorithm that completes the mesh by setting up initial examining strip set and subdivision of the strip set.

给出了限定点、限定线在Voronoi网格中存在的充要条件，提出了二维限定Voronoi网格细化算法，通过设置初始检测带，然后细分检测带来实现限定Voronoi网格的剖分；同时证明了该算法对于任意平面线段图输入限定条件的收敛性。

In the social form of agriculture in which realms were integrated, trust in social life was guided by personality, behavior conventions and religion culture overwhelmed with traditions, and was constrained by awful authority, and because of these institutive factors spread into social system that was characterized by integrity of family and nation, and therefore there was conventional government trust relationship.

在农业社会统治型社会治理模式中，横向层面的社会信任经由传统浸润的个体人格系统和行为惯例、宗教式的文化引导、威慑性的权力钳制等制度因素自发地扩展于家国一体的体制之中，从而生成了"习俗型政府信任关系"。

The dissertation discusses the problem of capacitor schedule and points out that this problem is an integer constrained optimization problem.

为提高软件设计水平、加快开发周期和降低开发费用，本文针对具体问题讨论了配网分析软件的实现方法。

It is convenient to evaluate using the imaginary time path integral representation,, with the integral take over the paths constrained by .

用虚时间路径积分表象来估算是方便的，其中，对所有及被所限的路径进行积分。

It is generally agreed that a well-defined and sufficiently constrained recognition problem (small intraclass variations and large interclass variations) will lead to a compact pattern representation and a simple decision making strategy.

这是普遍公认的一个明确界定和约束足以识别问题(小组内变异和大组内变异)导致一个紧凑模式的代表性和一个简单的决策策略。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了