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The characteristic of fuel consumption at aero-engine afterburning condition was analyzed.Based on the fact that the efficiency of main combustor is higher than that of the afterburner,this article puts minimum fuel consumption mode into use at aero-engine afterburning condition.
分析了发动机加力状态燃油消耗的特点,利用主燃烧室燃烧效率远大于加力燃烧室燃烧效率的特点,将性能寻优控制中的最小油耗模式扩展至加力状态。
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The characteristic of fuel consumption at aero-engine afterburning condition was analyzed. Based on the fact that the efficiency of main combustor is higher than that of the afterburner, this article puts minimum fuel consumption mode into use at aero-engine afterburning condition.
分析了发动机加力状態燃油消耗的特点,利用主燃烧室燃烧效率远大於加力燃烧室燃烧效率的特点,將性能寻优控制中的最小油耗模式扩展至加力状態。
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Its lumber material is narrow for the alburnum, distributes in north compared to the south narrowly, light yellow arrives the yellow light yellow, the heartwood to brown brings slightly red; Has the resin, the durability is bad; The lumber texture, the density, standard natures and so on the festival receive the geography condition influence which grows, is widespread as a result of this lumber distribution, but therefore the lumber material the variation is greatly more obvious than because of the condition other tree seeds; The lumber weight is ordinary, solid.
其木材材性为边材窄,分布在北部的比南部的更窄,浅黄到黄色,心材浅黄至褐色略带红色;有树脂,耐久性差;木材的纹理、密度、节子等格质均受生长的地理条件影响,由于该木材分布广泛,所以木材的材性因条件而变异大比其他树种明显;木材重量一般,较结实。
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On equipment, now the corporation owns two air-condition storerooms with storage capacity of 12 thousand tons, 16 fruit processing lines and relevant appurtenant equipments and adopts advanced Italian air-condition equipments, so technical strength is rich and facility is complete.
公司现有气调库两座,存储量为12000吨,采用先进的意大利气调设备,拥有水果加工生产线16条及相应的附属设施,技术力量雄厚,设施完备。
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On the basis of collecting systematically the materials of the physical prospecting, the geological drilling and the water pumping experiment of the mine, geological structure ,aqui- fers and other hydrogeological condition of the minefield have been detailedly researched. Finally, the conclusions that geological structure of the mine is ***, aquifers belong to the aquosity small rock layer, hydrogeological condition is ***, were drawn.
在系统收集该井田矿井物探、钻探和抽水试验资料的基础上,对井田内地质构造、各含水层等水文地质条件进行了具体研究,得出结论为矿区地质构造简单;含水层属于含水性弱或微弱的岩层;水文地质类型为中等。
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In the respect of data interpretation proceeding, the paper carried out the inversion calculation of experiment data with the resistivity CT method, gave some study on the image effect when the iron bodies were placed flatly close to water level under semi-space condition and were placed flatly, vertically or aslope to the water level under whole-space condition.
在资料解释处理方面,本文采用了电阻率CT法对实验数据进行反演计算,研究了半空间和全空间条件下铁块水平、垂直和倾斜放置时的成像效果,由效果图可以看出,通过电阻率CT法反演出的铁块的位置与水槽模拟实验中铁块的实际位置吻合的较好。
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In addition, the blank holding force that is required to avoid wrinkle and rupture during conical part deep drawing is researched. The necessity of reasonable blank holding force in pressing is expounded. From the view of mechanical analysis, the wrinkle critical condition of side-wall is derived for the first time by the stress state of side-wall, the main deformation region on blank. According to the critical condition of plastic instability for flange, side--wall, corner of punch on blank, The blank holding force in conical part deep drawing is divided into four different regions within its forming figure. The basic principle of reasonable blank holding force during stamping is summarized and provided. The mathematical model of reasonable blank holding force that avoids the wrinkle and rupture is established and verified by the finite element numerical simulation and the grid experiment method. The result shows that it is accurate and reliable.
此外,本文还研究了圆锥形件拉深成形过程中,随着拉深变形过程的进行,毛坯为避免产生起皱、破坏缺陷而对压边力的需求情况,阐明了圆锥形件拉深成形过程中压边力合理变化的必要性;由毛坯主要变形区悬空锥壁部分的受力变形情况,从力学分析的角度,首次推导得出了圆锥形零件悬空锥壁起皱失稳的临界条件;并根据主要变形区法兰、悬空锥壁及凸模圆角部分的塑性失稳临界条件,在其成形范围图中,将圆锥形件成形过程中的压边力划分为四个区域;总结并提出了圆锥形件成形过程中压边力合理变化的基本原则;建立了防止起皱、破坏缺陷产生的压边力合理变化的数学模式,并得到了有限元数值模拟及网格实验法的验证,证实了理论分析结果的正确性和可靠性。
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The model applies to emission prediction of the stationary and thirteen operating conditions successfully.2 Based on the study of the differences and influence factors of transient and stationary condition emission a double model method predicting the emission in automobile operating condition based on engine stationary testing was put forward.
在此基础上,建立了内燃机稳态排放性能预测模型,并将该模型成功地用于内燃机稳态排放特性及十三工况循环排放预测。 2在对内燃机瞬态排放与稳态排放差异及影响因素进行深入分析的基础上,提出基于内燃机稳态测试进行汽车工况法排放预测的双模型预测法。
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Based on the analytical results, this paper put forward its investigative preconditions: organizational members participate in cooperation with the condition of optimizing their personal objectives; optimization of organizational objectives must be based on its members'objective optimization; members'cooperative dedications under the condition of their own objective optimization are resource restrictions of their organizational objective optimization.
根据分析结论提出了本文的研究前提:成员以个人目标优化为条件参与组织合作,组织目标优化受到成员目标优化的制约,即组织成员在个人目标优化条件下的合作投入是组织目标优化的资源约束。
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A novel numerical boundary condition is presented in the paper, which is compared with the method of measured equation of invariance on computational time and memory requirement. It is demonstrated that the new boundary condition is of benefit both on the time and memory, therefore is an efficient method for computation of electrically large dimension objects.
本文给出了一种新的吸收边界条件,并与不变性测试方程法、矩量法在计算时间、存贮空间方面进行比较,结果表明运用这个条件在计算时间和存贮空间上都具有优点,是计算电大尺寸媒质柱体电磁散射特性的一种有效手段。
- 相关中文对照歌词
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- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力