机械工程

Along with energy crisis and worsened environment becoming more and more intensively, gas-vehicle receives the unprecedented recognition because of its less emissions, more economical and saving petroleum resource. The research and utilization of gas-vehicle develop quickly all over world. Of course, automotive fuel changing from gasoline and diesel into gas fuel is also carried out blazingly everywhere in our country.

中文题名燃气汽车发动机燃烧特性及工作性能研究副题名外文题名 Study on combustion characteristics and performances of automotive engine by gas fuel 论文作者詹樟松导师夏来庆教授学科专业动力机械及工程研究领域\研究方向学位级别博士学位授予单位浙江大学学位授予日期2001 论文页码总数132页关键词汽车发动机燃气汽车发动机燃烧馆藏号BSLW /2001 /U464 /32 随着能源危机和生态恶化日益严重，燃气（主要指压缩天然气和液化石油气）汽车以其优良的排放、良好的经济性以及能够部分替代紧张的石油资源而受到了空前重视，世界范围内燃气汽车的研究和应用也随之空前高涨。

Yantai Hyde construction machinery factory occupies 60,000 square meters, construction area of 40,000 square meters, with 5,000 square meters of modern production of steel structure of the workshop, a CNC cutting, Auto Group legislature, automatic welding and alignment, such as ultrasonic testing Composed of special steel structure production lines, with the domestic industry with a unique large-scale surface treatment equipment Shotblast machine and its supporting mechanical processing workshops, casting, casting workshop, the tower crane workshop, digging bucket shop, pull the plant and paint shop And so on.

烟台海德建筑工程机械厂占地60000平方米，建筑面积40000余平方米，拥有5000平方米的现代化生产钢结构的车间，采用数控切割，自动组立，自动焊接及校直，超声波检测等组成的专用钢结构生产线，拥有国内同行业中独特的大型表面处理设备抛丸机及与其配套的机械加工车间，铸造、铸钢车间、塔机车间、挖斗车间、扳金车间及喷漆车间等。

Such as Komatsu bulldozer engineering machinery, large-scale and variety, complete, will be more credibility and visibility in China.

小松推土机等工程机械，大型和品种的，完整的，将被更多的信誉和知名度在China。

Bushing has high load capacity, wear resistance and good lubricating performance. It can be applied in

加油间隔时间，具有较高的抗压、耐磨性能和优异的润滑性能，适用于挖掘机、装载机等工程机械的重要

Li Chao is a PhD cadidate in the School of Machine and Vehicle, Beijing Institute of Technology.

北京理工大学机械与车辆工程学院博士在读。

Based on the reasonable simplification and assumption for slewing ring in mechanical engineering, calculating the pressure on unit length of arc at any angle of raceway under different loads of slewing ring .

在对工程机械中常用的回转支承装置进行合理的简化和假设后，根据其受力状况，分别计算出作用在回转支承上的各种载荷对滚道圆周上任意角处单位弧长上所产生的压力，最后应用压力叠加的方法，推导出回转支承装置摩擦阻力矩的计算公式。

Casting for auto parts(calliper,bracket,disc,pressure plate etc),reerigerator and air conditioner compressor parts,machinicalparts,construction parts,motorparts, pump parts etc.

汽车用铸件（制动钳体、支架、制动盘、压盘等），机械零件，冰箱、空调压缩机铸件，建筑工程用铸件，电机零件，水泵等。

Its main activities involve in the development of new cultivars, sugarcane cultivation, plant protection and cane field machinery; by-product utilization and effluent treatment; new technology and equipment for cane sugar processing, instrument and computer application and automatic control special for sugar mills; cane sugar Product quality supervision and inspection as well as arbitration, and providing scientific and technological information in the sugarcane industry.

本所研究开发的主要内容包括：甘蔗新品种选育、甘蔗栽培、甘蔗植保和蔗田机械；制糖新工艺和新设备；甘蔗制糖副产品综合利用和糖厂"三废"治理；糖厂专用仪器、仪表，微机应用和自控工程；甘蔗糖产品质量监督检测及仲裁；为全国提供甘蔗糖业科技信息。

Calcium alginate gels. So, the concentration of calcium solution may increase to 300 mmol/L, which has no influence on the growth of cartilage cell, and can enhance the intensity of calcium alginate gels.

因此固化剂氯化钙的浓度可以提高到300 mmol/L，该浓度不仅对软骨细胞的生长无影响，而且能适当提高藻酸钙凝胶的机械强度，可以作为一种较理想的软骨组织工程支架材料。

Changsha enjoys the reputations of "Amusement City of China","Cartoon City of China" and "Engineering Machinery City of China".

有"中国娱乐之都"、"中国动漫之都"、"中国工程机械之都"的美誉。2007年12月，国务院批准长沙、株洲、湘潭城市群为资源节约型和环境友好型社会改革试验区。2008年，获选"2008中国最具幸福感城市"。

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。