负荷

By timely and spatially controlling the physical and chemical characteristics of the fuel at both port injection stage and in-cylinder direct injection stage, HCCI/DI stratified compound combustion is developed to combine the advantages of HCCI and conventional DICI on cycle-to-cycle basis and achieve clean and efficient combustion at full load ranges without misfiring and knocking.Firstly, three types of dual fuel including n-heptane/diesel, iso-octane/diesel and ethanol/bio-diesel a...更多re utilized to investigate the combustion and emission characteristics of HCCI/DI stratified compound combustion. The experimental results indicate that n-heptane/diesel HCCI/DI combustion presents a three-stage heat release consisting of HCCI low temperature heat release, high temperature heat release and diesel diffusive combustion.

本文提出的基于燃料设计与管理的HCCI/DI分层复合燃烧是一种将HCCI燃烧和传统缸内直喷压燃融为一体的新型燃烧方式，通过对燃料理化特性的设计和在预喷与直喷阶段从时间尺度和空间尺度上对均质和非均质混合气制备过程的控制和管理，在发动机的一个工作循环中将均质混合气的HCCI燃烧和非均质混合气的DICI扩散燃烧相融合，彻底消除了HCCI燃烧在小负荷失火和大负荷爆震的弊病，实现了发动机全负荷范围内的高效清洁燃烧。

In addition, the HC and CO emissions are much lower than the emissions of HCCI and the indicated thermal efficiency of HCCI/DI is higher than the prototype diesel engine.Furthermore, without spark ignition and hot EGR, the HCCI/DI combustion of in-cylinder directly injected iso-octane is achieved with the induction of thermal and chemical active atmosphere generated by the HCCI combustion of port injected n-heptane.

通过对燃料理化特性、预混合率和缸内直喷时刻这三个影响因素的优化，实现了对HCCI/DI燃烧相位、放热分布和形态的调制，使发动机的负荷拓展到全负荷，在全负荷范围内NOx排放低于40×10-6排放水平，HC和CO排放显著低于HCCI燃烧，同时发动机指示热效率η_i高于原机柴油直喷的水平。

As for hydraulic excavator routine three lever power models,pump engine match principles and realization methods are expounded,then the characteristics of load sense system are analyzed,and the conflict between load sense control and pump engine match is clarified.

就液压挖掘机中常见的三档功率模式，详细地阐述了泵与发动机的匹配原理及其实现方法，分析了负荷传感系统的特点，阐明了负荷传感控制与泵、发动机匹配相矛盾的实质，提出了在保留泵与发动机匹配时应舍弃负荷传感控制的论点，对于泵与发动机匹配时的液压回路进行了较深的探讨，提出了由计算机依据泵与发动机匹配的原则，通过主阀自动调节和分配各执行器流量和功率的新的学术思想，推导了相关的公式。

B Where the Load up/down program is not provided, the Engineer shall increase and decrease the speed in accordance with the speed increase and decrease procedure of each ship, and shall pay attention to the Load Indicator, the RPM of the Main Engine or RPM of the propeller shaft, CPP pitch, the speed

如已提供增减负荷程序，轮机员应根据速度增加和减少程序进行加减速，特别注意，负荷显示、主机转速、螺旋桨轴转速、可变螺距、船速等，避免突然加减负荷。

It is the first time to compare the emission of the premixing LPG/diesel dual fuel engine with that of the mixing injection LPG/diesel dual fuel engine. The results state that the NO〓 emission of the premixing dual fuel engine is lower than that of mixing injection dual fuel engine in the whole loads, but the emission of HC and CO is reverse.

研究结果表明：在整个负荷范围内，预混进气双燃料发动机的N0〓排放明显低于混合喷射双燃料发动机；混合喷射双燃料发动机的HC和CO排放较低；在小负荷二者的烟度相差不大，但在大负荷预混进气双燃料发动机的烟度较低。

Bellows Gate Valves However, in large differential pressure operating conditions, evaporation pressure has eased, the evaporator load requirements of the fluid volume decreased, but the actual situation the contrary, in the suction superheat unchanged, due to evaporation pressure has eased, the evaporator outlet pressure be reduced accordingly, pressure changes above and below the diaphragm, causing the main valve opening increases for increased fluid; but in a small pressure operating conditions, evaporation pressure rise, evaporator load demand for fluid volume increased, but the reality is that in the suction gas superheat unchanged, due to evaporation pressure rise, a corresponding increase in the evaporator outlet pressure, pressure difference above and below the diaphragm smaller, so that the main valve opening decreased for the reduction of liquid volume; in variable load is all about.

但在大压差工况下，蒸发压力降低，蒸发器负荷需求的液量减少，但实际情况相反，在吸气过热度不变的情况下，由于蒸发压力降低，蒸发器出口压力相应降低，膜片上下的压差变大，使主阀开度增大，供液量增加；但在小压差工况下，蒸发压力上升，蒸发器负荷需求的液量增多，但实际情况是在吸气过热度不变的情况下，由于蒸发压力上升，蒸发器出口压力相应提高，膜片上下的压差变小，使主阀开度减小，供液量减少；在变负荷下亦如此。

However, in large differential pressure operating conditions, evaporation pressure has eased, the evaporator load requirements of the fluid volume decreased, but the actual situation the contrary, in the suction superheat unchanged, due to evaporation pressure has eased, the evaporator outlet pressure be reduced accordingly, pressure changes above and below the diaphragm, causing the main valve opening increases for increased fluid; but in a small pressure operating conditions, evaporation pressure rise, evaporator load demand for fluid volume increased, but the reality is that in the suction gas superheat unchanged, due to evaporation pressure rise, a corresponding increase in the evaporator outlet pressure, pressure difference above and below the diaphragm smaller, so that the main valve opening decreased for the reduction of liquid volume; in variable load is all about.

但在大压差工况下，蒸发压力降低，蒸发器负荷需求的液量减少，但实际情况相反，在吸气过热度不变的情况下，由于蒸发压力降低，蒸发器出口压力相应降低，膜片上下的压差变大，使主阀开度增大，供液量增加；但在小压差工况下，蒸发压力上升，蒸发器负荷需求的液量增多，但实际情况是在吸气过热度不变的情况下，由于蒸发压力上升，蒸发器出口压力相应提高，膜片上下的压差变小，使主阀开度减小，供液量减少；在变负荷下亦如此。因此热力膨胀阀在变工况下供液量的调节方面需进一步改进。

Presenting subjects manipulated mental workload with five tests, including Raven's Standard Progressive Matrices and four subtests of Wechsler Intelligence Scale for Chinese-Children revision in 60 to 70 minutes. Reading velocity, mistake rate, index of mental capacity in Number Cancellation Test and test time, the right number of tracking lines in Visual Tracking Test were calculated and compared between the two groups.

以瑞文标准推理测试、韦氏智力量表中部分项目测试60~70min作为脑力作业负荷，负荷前、后分别进行划消试验和视觉追踪测验，统计划消试验的阅读速度、错误率、脑力工作能力指数，统计视觉追踪试验的完成时间及正确数，分析脑力作业负荷对肥胖组和对照组各指标的影响及2组间的差异，分析肥胖青少年注意能力的特点。

Adolescents of the two groups were paired according to age groups, height, schooling level and parental educational level. Average scores of all indices were calculated and compared between the two groups. Mental workload was manipulated by presenting subjects with five tests, including Raven's Standard Progressive Matrices and four subtests of Wechsler Intelligence Scale for Children-Chinese revision in 60 to 70 minutes.

以瑞文标准推理测试、韦氏智力量表中部分项目测试60～70min作为脑力作业负荷，负荷前、后分别进行划消试验和视觉追踪测验，统计划消试验的阅读速度、错误率、脑力工作能力指数(index of mental capacity，IMC)，统计视觉追踪试验的完成时间及正确数，分析脑力作业负荷对肥胖青少年推理能力、智力及注意力等认知功能的影响及两组间的差异，并分析肥胖青少年注意力的特点。

Proposes a method for selecting optimal chiller unit configuration in design phase, in which the energy consumption of chillers is simplified to the function of actual cooling capacity and entering water temperature of the condenser, then the all-year building load frequency distribution under different outdoor wet-bulb temperature that determines the minimum entering cooling water temperature is obtained by dynamic load calculation, and finally, calculates the all-year energy consumption and energy consump...

提出一种在设计阶段对冷水机组方案进行优化配置的方法。首先，冷水机组的能耗计算简化为制冷机的实际制冷量和冷却水进口温度两个独立变量的函数。进一步，通过建筑动态负荷计算获得全年冷负荷频率特性以及相应的室外湿球温度分布，其中湿球温度决定了冷却水最低进口温度。最终，计算出各种冷水机组配置方案的全年以及不同冷负荷需求工况下的运行电耗，并得出最优化的节能方案。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。