基本特点

Focused on the fifty-year development of Erhu music since the new China was established in 1949, the thesis intends to make a brief introduction to its development, illustrate the characteristics in each stage, probe into its primitive types and artistic features, and therefore lead to the pondering and prospect over its progress.

本文以建国五十多年来二胡音乐的发展历程为集中研究对象，旨在展现在这期间各个阶段二胡音乐发展的概况及特征，探讨二胡音乐的基本类型及其艺术特点，进而引发对二胡音乐发展的思考与展望。

According to the structure of the diesel locomotives, the author puts forward the possibilities of the application of the HFC-227ea gas fire-extinguishing system, and analyses its difficulties and solving methods.

从铁路内燃机车的火灾危险性分析着手，根据内燃机车的结构和环境特点，提出了七氟丙烷灭火系统应用的可行性，并分析研究了应用中的难点和解决方案，通过模拟试验验证了七氟丙烷系统在气流交换量较大的列车上使用的可行性并基本适宜在机车上采

Settlement characteristics are studied based on formula of suspended sediment settling velocity and previous research results. Results show that the suspended sediment flux quickly decreases from the Hangzhou Bay to the offshore area. Although the suspended sediments are primarily transported towards the offshore area, net transport towards the Hangzhou Bay is also found in the study area. The study area is basically located in hydrodynamic balance belt, and the suspended sediment transport is characteristics of reciprocating movement and small amount of net sediment discharge. The net suspended sediment transport is mainly controlled by average current transport, Stokes drift-induced transport and gravitational circulation transport. The advection transport effect gradually weakens and gravitational circulation transport evidently intensifies from Hangzhou Bay to the offshore area. Settling velocity of single particles is far smaller than that of floccules, so, influence of flocculation of suspended sediments must be taken into the consideration.

结果表明，研究区净悬沙通量自杭州湾内向外海迅速变小，悬沙总体由杭州湾向外海输运，但同时存在向杭州湾方向的净输沙；研究区基本处于水动力平衡带，悬沙输运具有往复搬运、净输沙量小的特点；平均流输运、Stokes漂移输运和垂向净环流输运是引起悬沙泥沙净输运的主要作用机制，自口门至外海，平流输运作用逐渐减弱，垂向净环流输沙在悬沙净输运中所占比例逐渐增加；舟山群岛海域既是杭州湾向东海输运泥沙的重要通道，也是东海沿岸流携带泥沙向南输运的过渡地带；研究区单颗粒泥沙沉降速度很小，远小于絮凝沉降速度，在研究本区悬沙沉降时必须考虑絮凝的影响。

The study area is basically located in hydrodynamic balance belt, and the suspended sediment transport is characteristics of reciprocating movement and small amount of net sediment discharge. The net suspended sediment transport is mainly controlled by average current transport, Stokes drift-induced transport and gravitational circulation transport. The advection transport effect gradually weakens and gravitational circulation transport evidently intensifies from Hangzhou Bay to the offshore area. Settling velocity of single particles is far smaller than that of floccules, so, influence of flocculation of suspended sediments must be taken into the consideration.Incipient velocity and transport flux of surface sediments are analyzed using formulas of incipient velocity and transport flux. Transport trend and controlling factors of surface sediments are studied by the method of grain size trend analysis.

结果表明，研究区净悬沙通量自杭州湾内向外海迅速变小，悬沙总体由杭州湾向外海输运，但同时存在向杭州湾方向的净输沙；研究区基本处于水动力平衡带，悬沙输运具有往复搬运、净输沙量小的特点；平均流输运、Stokes漂移输运和垂向净环流输运是引起悬沙泥沙净输运的主要作用机制，自口门至外海，平流输运作用逐渐减弱，垂向净环流输沙在悬沙净输运中所占比例逐渐增加；舟山群岛海域既是杭州湾向东海输运泥沙的重要通道，也是东海沿岸流携带泥沙向南输运的过渡地带；研究区单颗粒泥沙沉降速度很小，远小于絮凝沉降速度，在研究本区悬沙沉降时必须考虑絮凝的影响。

ABSTRACT: In this paper, a new three phase to four-phase transformer with four phase pillars structure is proposed, its electromagnetism prnciple is analysed, and properties and features of the transformer are also discussed further.

摘 要：首次提出了一种四相四芯柱结构的三相变四相电力变压器，分析了其电磁变换的基本原理，并进一步讨论了这种变压器的性能与特点。

Linear frequency-modulated pulse is one of the most important large time-bandwidth product signals, but it demands large amount of calculations for digital processing.

针对TMS320C6201的特点，提出了在VLIW体系结构下，提高FFT并行运算效率的方法，从而使系统完成512点数字脉冲压缩的时间仅为124us，基本达到TMS320C6201的性能极限。

The basic requirements and characters of powder metallurgy friction material for airplane were reviewed, and the selection of the friction material for Boeing-737 airplane was studied by weighted analysis.

综述了飞机用粉末冶金摩擦材料最基本的功能要求和特点，并采用加权分析对Boeing-737飞机用摩擦材料的选择进行了研究。

The development process of the DRRS bogie designed and manufactured in Talbot Rolling Stock Works in Germ any is expounded.

阐述了德国 Talbot车辆工厂设计生产的 DRRS转向架的发展过程，详细描述了 DRRS转向架的基本结构和主要特点，列出了该转向架的主要性能参数，并对该转向架的运用情况进行了简单介绍。

That is to say, under the surface of leisure or hubbubs, the world seems to be a place of apathy and changes which people cannot know or control.

有一个基本事实是，廖真武的这批作品，都选择了偏冷的黑白灰色调，而没有现实世界五光十色的再现，这多少能表明艺术家试图透过自己的作品来表达出他眼中的这个世界的某些内在特点，即表面的闲散或者喧闹的背后，似乎充满了各种人们无法知道也无从知道的冷漠和变数，命运的掌控，对于这些人来说，似乎是一个未曾想过也难以企及的话题。

Like the system bound cohesive ties such as deictic words, structural substitutes, synonyms and hyponyms, GN is phoric, but GN is less accessible and more general than them. Besides, GN is a member of an open set and can be a different part of speech from its referent. So GN poses comprehesion difficulty to foreign language learners. However, GN is the superordinate member of...

文章将英语泛指词与直示词、形式替代词和上义词等指称词作比较，指出它除了&指称性&外，还具有&低可及性&、&高概括性&、&开放性&和&不对等性&等自身特点，故易造成理解困难；但它同时是基本语义类别的上座标词，其&语义类别&可以限定其所指的范围，成为克服理解困难的契机。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。