单型的

Based on the fundament of analyses of abroad and our country CNG engine technology, the developing strategy of CNG engine has suggested. Based on the EQD180-20 diesel which the basic construction unchanged, the necessary modified designing for CNG engine was made which included combustion system, intake and exhaust system, cylinder head, piston, and turbocharger.

在分析国内外天然气发动机技术的基础上，提出了满足国3排放的电控喷射单燃料CNG发动机开发方案；以EQD180-20柴油机为基础机型，在基本不改变原机结构的前提下，对燃烧系统、进排气系统、气缸盖、活塞和增压中冷系统进行相应的变型设计；采用稀薄燃烧、增压中冷、低涡流燃烧系统、电控分组点火、开环控制、电控CNG喷射系统和氧化型催化器等技术，降低排放，保持天然气发动机的动力性和经济性。

The total process of development included establishment of web station, design of web page, manufacture of tree menu, design of dynamic image, making and linking of single choosing frame, making of down-draught frame and transfer of database, realization of systemmaintenance, consultation and search, etc.

开发过程包括网站的建立和网页的设计、树型菜单的制作、动态图像的设计、单选框的制作和连接、下拉框的制作及数据库调用、系统维护及查询、搜索功能实现等步骤。

The direct interaction of copper ion with CuZnSOD was studied by fluorescence spectroscopy, and a type of 1:1 stable complex has been generated, which was certified by the quenching experiment of intrinsic fluorescence. The process of the generated complex shown by dynamic analysis of fluorescence quenching, consisted of two steps, in which the first step was a quick association process of double molecules to generate a loose complex, and the second step was a slow process of single molecule, where the loose complex was isomerized into the compact complex.

通过荧光光谱方法研究了这种相互作用，内源荧光的猝灭实验表明Cu(上标 2+)与CuZnSOD形成1：1型稳定配合物；荧光猝灭的动力学分析表明配合物形成过程由两个独立步骤完成：第一步是双分子快速缔合过程，形成了结合疏松的配合物，第二步是单分子慢速过程，即松散的配合物&异构化&成为结合紧密的配合物。

The direct interaction of copper ion with CuZnSOD was studied by fluorescence spectroscopy, and a type of 1∶1 stable complex has been generated, which was certified by the quenching experiment of intrinsic fluorescence. The process of the generated complex shown by dynamic analysis of fluorescence quenching, consisted of two steps, in which the first step was a quick association process of double molecules to generate a loose complex, and the second step was a slow process of single molecule, where the loose complex was isomerized into the compact complex.

通过荧光光谱方法研究了这种相互作用，内源荧光的猝灭实验表明Cu2＋与CuZnSOD形成1∶1型稳定配合物；荧光猝灭的动力学分析表明配合物形成过程由两个独立步骤完成：第一步是双分子快速缔合过程，形成了结合疏松的配合物，第二步是单分子慢速过程，即松散的配合物&异构化&成为结合紧密的配合物。

Single-needle lockstitch flat bed machine with bottom feed, needle feed and alternating feet and a maximum stitch length of 12 mm. The 867-190020 ECO is equipped with a large vertical hook. With the M-TYPE series a vision has become reality - a platform for medium heavy duty machines creating a new dimension of functionality and flexibility for all kinds of medium -weight applications. The lockstitch flat bed machine class 867, the first model of M-TYPE series, will set new standards.

该机型为采用下送布、针送布和交替压脚上送布的单针锁式线迹平底板缝纫机，最大针距长度为12mm，867-190020 经济型配置了垂直大旋梭。M-系列的推出使得以前的愿景变成了现实一个适用于中厚料加工应用领域集多功能和灵活性于一体的中厚料缝纫机通用平台诞生了。867型锁式线迹平底板缝纫机作为M-系列推出的首款机型，将为缝纫业界设定新的标准。

Coupling between different planers motion of a cable and between cables and mast having been considered, a practical formula is developed to calculate dynamic tension of cable and dynamic equations of guyed mast expanded order system are derived.

在单索结构振动理论的基础上，用纤绳的前4阶振型拟合其空间振动曲线，综合考虑纤绳在空间的耦合振动和纤绳、杆身的相互影响，得到纤绳动张力实用表达式和整体结构的扩阶振动方程。

Afterwards,this paper presents typical station type selecting model by taking unidirectional three-stage/three-yard Marshalling station and bidirectional three-stage/six-yard Marshalling station as representation.At last,northern Xuzhou is applied to a numeral example to validate the effect of this method,which proves that station type selecting by means of comparing the total waste of wagon flow in the Marshalling station from the view of wagon flow structure is not only effective but scientific,meanwhile,this provides a scientific and effective decision-making measure for determining the scope and layout of Marshalling station.

在上述研究基础上，以单向三级三场和双向三级六场为代表，构建能力约束条件下的典型单双向系统的择优比对模型，并通过徐州北编组站进行实例验证，从中看出，从车流结构入手，根据各种车流在编组站所消耗总费用的高低来进行站型选择不仅切实有效，而且经济科学，同时，这也为全面定位编组站的规模和布局提供了一种科学有效的决策手段。

The conditions for the existence of crank for Watt's mechanism, a basic type of one-degree-of-freedom planar six-bar mechanism,are investigated with the triangular dividing method and the method of instantaneous fixing of the driving bar.

本文采用平面杆机构的三角形划分法及主动杆瞬时凝结法探讨了单自由度平面六杆机构的一种基本型式——Watt型机构的曲柄存在条件；并用取极限的方法得到了其诱导机构的曲柄存在条件。

G Single-Screw Pumps is an enclosed screw pump with inner gearing, a kind of rotor positive-displacement pump. As this kind of pump is characterized by being adaptable for the medium, stable flow, good suction performance and small pressure pulsation, it can transfer very viscous media or those containing hard suspended or solid grains or fiber apart from various flowing media. Besides, it boasts good adjusting performance, wide range and high efficiency. Therefore it is widely applied in various industries like environmental protection, shipping, petroleum, pharmacy, household chemical, food, brewage, construction, mining, chemistry, printing, paper making, power plants and boilers.

上海帕特泵业制造有限公司的G 型单螺杆泵是一种内啮合的密闭式螺杆泵，属转子式容积泵，由于这种对介质的适应性强，流动平稳，吸入性能好，压力脉动小，除可以输送各种可流动的介质外，还可以输送高粘稠介质、含有硬质悬浮颗粒或固体颗粒的介质、含有纤维的介质，调节性能好，范围宽，效率高，因此，在环境保护、船舶、石油、医药、日化、食品、酿造、建筑、采矿、化学、印刷、造纸、电厂、锅炉等各种行业得到广泛应用。

G Single-Screw Pumps is an enclosed screw pump with inner gearing, a kind of rotor positive-displacement pump. As this kind of pump is characterized by being adaptable for the medium, stable flow, good suction performance and small pressure pulsation, it can transfer very viscous media or those containing hard suspended or solid grains or fiber apart from various flowing media. Besides, it boasts good adjusting performance, wide range and high efficiency. Therefore it is widely applied in various industries like environmental protection, shipping, petroleum, pharmacy, household chemical, food, brewage, construction, mining, chemistry, printing, paper making, power plants and boilers.

上海帕特泵业制造有限公司产生的 G 型单螺杆泵是一种内啮合的密闭式螺杆泵，属转子式容积泵，由于这种对介质的适应性强，流动平稳，吸入性能好，压力脉动小，除可以输送各种可流动的介质外，还可以输送高粘稠介质、含有硬质悬浮颗粒或固体颗粒的介质、含有纤维的介质，调节性能好，范围宽，效率高，因此，在环境保护、船舶、石油、医药、日化、食品、酿造、建筑、采矿、化学、印刷、造纸、电厂、锅炉等各种行业得到广泛应用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。