特性

Factors, such as functional additive for internal combustion engine, blending temperature, distillation range of base oil and the complex ratio of antifoaming agent, affect the foaming performance are highlighted.

报道不同种类抗泡剂在不同润滑油中的泡沫特性，重点介绍了内燃机油功能添加剂、油品调合温度、基础油馏分组成、抗泡剂复合比例等对油品泡沫特性的影响。

2Research of strength characteristic for high bending concreteWe researched the bending strength, compression stength and cleavage strength characteristics of different type, different design strength and different age HBSPC , and analyzed the relations of of the strength of different HBSPC,we also analysised the influence regulation for HBSPC strength by the the admix amount and feeding sequence.

2高抗折强度路面混凝土强度特性研究。研究不同类型、不同掺量和不同龄期HBSPC的抗折强度、抗压强度和劈裂强度特性，并分析HBSPC不同强度之间的关系。

The types of common concrete admixture s and their characteristics are briefly introduced.

简要介绍了常用外加剂的种类及其特性，从每种外加剂的特性出发分析了其在混凝土施工中的应用，以促进外加剂的广泛应用，大大改善混凝土的工作性能。

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以励磁故障后发电机端的相关参数的变化为基础，通过对以静稳定边界和异步阻抗边界作判据的两类三种现行励磁保护在原理上存在的缺陷分析，发现：励磁故障是一个大干扰稳定性问题，励磁故障后的发电机的动态功角特性与静态功角特性有很大的差异，已远非正弦曲线，因此基于小干扰稳定性原理、以静稳定边界作判据的保护必然动作不理想；异步边界阻抗判据是一个下移j Xd′的等无功阻抗圆，它可以保证完全失磁后的发电机测量阻抗能进入该阻抗圆，但不能保证完全失磁之外的其它状态不会进入该阻抗圆，因此在系统电压短时下降或发电机突然甩负荷等情况下可能启动该保护使之误动。

The demands of modern technique have a growing pressure for improvement of radome as a protection in front of antenna, which include the aerodynamical qualities, structural requirements of the airframe and excellent electromagnetic characters.

摘要——现代技术对于作为防护层安装在雷达天线前面的雷达罩提出了很高的要求，除机械特性和气动特性以外，还必须具有良好的电气性能。

Two-equation turbulence model is used in numerical simulation for the side-air burner, compared with the practical measures and tests, good accordance achives. This method can bring great convenience in analyzing aerodynamical field of boiler. Secondly the method of XRD is used in analyzing the phase transformation in the course of dynamic slagging test, so we can describe the process of slagging comparatively accurately. Last this paper introduces a kind of fuzzy mathematics model which comprises an assemblage combined by seven change factor.

本文首先采用k—ε双方程模型对水煤浆侧边风燃烧器进行了数值模拟，并与实际锅炉燃烧器冷态调试试验结果对比，结果吻合较好，这为我们分析炉内空气动力场特性提供了参考；其次对锅炉结渣动态特性试验，采用XRD的分析方法，较为准确的描述了实际锅炉结渣的过程；最后为了准确的判断出水煤浆的结渣倾向，本文对锅炉结渣的七个影响因素提出了模糊综合判断模型，正确的反映出了该水煤浆的结渣倾向。

And use the prior and more consummate ways to carry through vaneaccidence design, These ways have own technology points and disadvantage, In this paperstressly discuss the momentum-element theory way, this way was developed in the basic ofthe two ahead ways, and it overcome their defect. It also use element theory to deal withvane design. In the vane designing and aerodynamical characteristic calculating they bothrelate with intervene gene, so the keystone is to carry through the intervene gene in twocase, thereout to do the vane design and aerodynamical characteristic calculating.

运用翼型的基本概念和风力机叶片的基础外型参数进行叶片设计的预研讨论，并分别运用了Glauert和Schmitz叶片设计方法叶片进行初步设计，这两种方法有其各自技术特点和缺点，文中还着重研究了动量—叶素理论方法，这种方法在前两种设计方法的基础上发展而成，并采用两者的叶素研究方法进行叶片设计，动量叶素理论方法在进行叶片外型设计和叶片气动特性计算都涉及到干涉因子，文中重点对设计和计算情况下的干涉因子进行处理，并由此来设计叶片的外型和进行气动特性的计算。

During the climbing phase, the flight parameters and weight of Trans - Aerosphere Vehicle change so much, thus the vehicle＇s controllability and stability vary very quickly.

跨大气层飞行器在爬升过程中飞行参数及质量特性变化剧烈，因而飞行器的操纵稳定特性也相应迅速变化。

It was suggested to improve the agglutinate properties through gluing the veneer with the honeycomb paperboard directly.

在作为包装材料，具有承重特性，因此有必要考虑纸木复合蜂窝材料的蠕变特性[2]。

According to evaluation of the thermal, hydraulic, environmental and mechanic characteristics and energy performance of building and VAV air-conditioning system, and evaluation of the control performance of local control loops using the simulator of VAV system, this paper presents five on-line supervisory control strategies for local control loops: on-line optimization of VAV supply air static pressure set-point, on-line optimization of AHU supply air temperature set-point, on-line optimization of on/off set of CAV sub-system, on-line optimization of outdoor air set-point and on-line optimization of chilled water secondary pump pressure set-point.

通过数字仿真器对建筑物及其变风量空调系统的热力、动力、环境和能耗等运行特性的模拟，以及对系统常规采用的下位机控制回路可控性和稳定性等控制特性的研究和分析，本文先从局部的角度开展了系统局部优化的研究。提出并在仿真器上分别实施了VAV送风静压设定的实时优化，AHU送风温度设定的实时优化，CAV子系统开／停的实时优化，新风量设定的实时优化以及二级泵冷媒水供水压差设定的实时优化。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。