- 更多网络例句与压相关的网络例句 [注:此内容来源于网络,仅供参考]
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Based on this analysis, a new method for evaluating the bluntness magnitude of a Berkovich indenter was proposed. This method was examined by the experimental results of indention loading curves for pure nickel and aluminum alloy 8009, and good agreement was obtained. For thin metal films deposited on hard substrate, a method is established for determining the yield strength and hardening index of the film from nanoindentation loading curve.
通过对理想与钝化Berkovich压头以及球形压头纳米压入软膜/硬基材料加载过程的数值研究,给出了两种压头纳米压入加载曲线的幂函数拟合指数及最大压入载荷同膜、基材料基本力学性能间的函数关系,并分别就Berkovich压头与球形压头建立了由纳米压入加载曲线确定沉积在陶瓷基体上金属薄膜屈服强度与硬化指数的方法。
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Because the workpiece is in dynamic balance, the resultant moment acting on it should be zero. Introducing the moment from lapping tool and press head a moving differential equation is built. In this equation only workpiece rotating speed is unknown. It means that workpiece rotating speed can be got by this equation. Since there is a transcendental function in integral function of the equation an analytic result can not be got, only digital result can be got by a computer. Thus a change rule of workpiece rotating speed with lapping parameters is known, e.g. the radius of press disc ball socket, radius of press head ball, the distance between the workpiece rotating axis and lapping tool rotating axis, workpiece radius, modulus of elasticity of the press head and press disc, friction coefficients between the lapping tool and workpiece, and between the head and disc, pressure between the lapping tool and workpiece and pressure between the press head and press disc.
因工件处于动态平衡状态,其上所受到的来自于磨具和压头的力矩应相等,将二力矩表达式联立,建立工件运动微分方程,该方程中只有工件的旋转角速度是未知量,因此可以求出工件旋转角速度,但该方程积分式中含有超越函数,得不出解析解,只能通过计算机求出数值解,得出工件旋转角速度随各研磨参数的变化规律,如压盖球座半径、压头的球头半径、工件回转中心相对磨具回转中心的偏心距、工件半径、压头和压盖材料的弹性模量、磨具与工件间的摩擦系数、压头压盖间的摩擦系数、磨具与工件间的压强、压头压盖间的压力等。
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Acquired Tianjin Construction Machinery Ltd. of natural gas transmission pipeline hydraulic equipment production line project of the country are supporting equipment; Cixi Burgmann Sealing Materials Company W-type high temperature and high pressure spiral wound gasket has been successfully used to HYDROCRACKER up; Dalian Hydraulic Parts Plant Factory and Shanxi Changzhi Hydraulic steering vane pump, are of medium and heavy motor vehicle steering system of the key components, the current annual output of both plants has reached more than 10 million units; Qingdao Kipper sealed the company's new portfolio of large-scale bi-directional sealing and anti-water oil seal are respectively 9 tons FAW Jiefang trucks and tractor trailers 1 matching seals; addition Tianjin Co., Ltd. special precision hydraulic hydrostatic transmission devices and many way valve, Huzhou Miguel pieces of the company's multi-function hydraulic slide-valve, Weihai, a combination of pneumatic components调压阀the air relief valve, Guizhou Feng Yang's hydraulic pump stations and hydraulic valves, such as shift , are well received by users.
天津市精研工程机械传动有限公司的天然气输送管道生产线液压设备是国家西气东输工程的配套设备;慈溪博格曼密封材料公司的高温高压W型缠绕垫片,现已成功地用于加氢裂化装置上;大连液压件厂和山西长治液压件厂的转向叶片泵,是中、重型汽车转向系统中的关键部件,目前两个厂的年产量已达10万台以上;青岛基珀密封公司的新型组合双向密封和大型防泥水油封是分别为一汽解放牌9吨车和一拖拖拉机配套的密封件;此外天津特精液压股份有限公司的静液压传动装置和多路阀、湖州生力液压件公司的多功能滑阀、威海气动元件公司的组合调压阀的空气减压阀、贵州枫阳液压公司的液压泵站和液压换挡阀等,都深受用户的好评。
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In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.
本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究,得出了许多有价值的结论,主要概括如下: 1、阐述了目前针对超声电机压电振子的主要建模方法,对压电振子动态特性的研究意义和必要性进行了论述,突出了本文研究内容的迫切性; 2、以压电陶瓷诱发弹性体发生弯曲变形为例,分析了压电陶瓷通过诱发应变来实现机电能量转换的机理;对基于纵弯模式的压电振子的运动及动力传递机理进行了分析; 3、基于模态假定,利用分析动力学的Hamilton原理,建立了面向直线超声电机压电振子的机电耦合动力学模型,并据此建立了压电振子的等效电路模型,导出了电参量与动力学特性参量的耦合方程,为压电振子与驱动电路的匹配提供了依据; 4、从压电陶瓷的本构方程出发,综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程,采用虚位移原理,建立了压电振子动态问题机电耦合场求解的有限元控制方程,为研究其大功率驱动下的非线性本构模型奠定了基础; 5、界定压电振子的动力学特性指标,对压电振子的机电耦合动力学模型参数进行计算及变参数仿真;依据等效电路模型,对压电振子的电学特性进行了仿真分析;通过有限元数值实验,对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析,找出了实现模态简并的激振频率;利用有限元控制方程,通过编程计算,对压电振子的力电耦合场参数进行了详细计算,得出了一些有价值的结论。
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A semiconductor device including a high voltage element and a low voltage element, including: a semiconductor substrate having high voltage element region where the high voltage element is formed, and a low voltage element region where the low voltage element is formed; a first LOCOS isolation structure disposed in the high voltage element region; and a second LOCOS isolation structure disposed in the low voltage element region, wherein the first LOCOS isolation structure includes a LOCOS oxide film formed on a surface of the semiconductor substrate and a CVD oxide film formed on the LOCOS oxide film, and the second LOCOS isolation structure includes a LOCOS oxide film.
提供一种在确保高耐压元件的高耐压特性的同时使高耐压元件和低耐压元件具有良好特性的半导体装置。具有高耐压元件和低耐压元件的半导体装置包含:规定了形成高耐压元件的高耐压元件区和形成低耐压元件的低耐压元件区的半导体衬底;在该高耐压元件区设置的第一LOCOS隔离结构;以及在该低耐压元件区设置的第二LOCOS隔离结构。第一LOCOS隔离结构由在该半导体衬底的表面上形成的LOCOS氧化膜和其上形成的CVD氧化膜构成,第二LOCOS隔离结构由LOCOS氧化膜构成。
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Used the finite element method computation pipe network resistance thus obtains the ballast water system the line pressure distributed situation. The paper also has carried on the computation to the ballast tank hydraulic loss and has provided the theory basis to the ballast pump optimized design. The overpressure to the ballast tank has been carried on the discussion. The paper also gets the function between the rated flow and the rated pressure of the pump on ships whose BW pipe net is uniform and line is different, which provides a new method for the selection of BW pump.
文章重点讨论了船舶压载水系统的水力计算,使用有限元法计算管网阻力从而得到压载水系统的管路压力分布情况;文章还对压载舱的水力损失进行计算,对压载水泵的优化设计提供了理论依据;文章还对压载水舱过压问题进行讨论;文章对压载水系统相同而航线不同的船舶,利用最小二乘法得到其压载水泵额定流量和额定压头之间的函数关系,为压载水泵的设计和选型提供了新的方法。
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The use of Fuji apples, and other high-end color in the early, usually in mid-September on the shop reflective film with bagging, to fruit, such as dredging of the supporting technology, the entire production Hongguo, the production tests, the following two methods Pumo Better:① will be reflective film in the shop under a tree-line on both sides, reflective film and the outer edge of vertical crown, tile floors, brick, stone and other压住edge, this method is suitable for close planting dwarf Park.
使用方法富士系等高档苹果在着色初期,一般在9月上中旬开始铺反光膜结合套袋、转果、疏叶等配套技术,生产全红果,经生产试验,以下两种铺膜方法较好:①将反光膜顺行铺在树下两边,反光膜与树冠外缘垂直,平铺地面,用砖、石等压住边缘,此方法适用矮化密植园。
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To reveal the complicated stress state of masonry structure in project and the effect of normal stress on shearing behavior,failure form and shearing strength,the shearing strength was obtained through experiments on 54 pieces of minitype sand-lime autoclaved aerated concrete masonry subjected to different normal stress.
为了解砌体结构在实际工程中所处的剪压复合的复杂受力状态,作用在砌体上的正应力对砌体的抗剪性能、砌体的剪切破坏形态及其对砌体抗剪强度的影响,对54个小型灰砂蒸压加气混凝土砌体进行静力抗剪试验,通过施加不同的正应力得到相应的抗剪强度;分析其破坏机理,归纳得出剪摩、剪压、斜压等破坏形态,并与砖砌体的破坏形态进行比较;根据试验结果回归分析得到灰砂蒸压加气混凝土砌体的静力剪压相关性曲线,与砖砌体的剪压相关性曲线进行对比分析,得到两者的异同;在静力剪压相关性曲线的基础上,依据变摩擦系数的剪摩理论,提出灰砂蒸压加气混凝土砌体静力抗剪强度的建议公式,并对摩擦系数进行了简化
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Hong Kong stocks in the last week only because "the issue of luncheon meat" and there's沽压Yurun Food (Hong Kong Stock Exchange code: 01068) at risk of such attacks, deep down 10.18%.
而港股中,上周才因&问题午餐肉&而出现沽压的雨润食品(香港交易所代码:01068)遭此打击,深跌10.18%。
- 更多网络解释与压相关的网络解释 [注:此内容来源于网络,仅供参考]
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Pressensteuerung :Austausch der Pressensteuerung:压机控制系统:更换压机控制系统
压机基础 Pressenfundament | 压机控制系统:更换压机控制系统 Pressensteuerung :Austausch der Pressensteuerung | 压机控制系统:压机控制系统可视化管理 Pressensteuerung :Visualisierung der Pressensteuerun...
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Brownout reset:(压降复位)(压降复位)(压降复位)(压降复位)
BootStrap Loader (启动程序(启动程序(启动程序(启动程序加载加载加载加载器)器)器)器)... | Brownout reset (压降复位)(压降复位)(压降复位)(压降复位), 7-5 | Buffer mechanism (缓存机制)(缓存机制)(缓存机制)(缓存...
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counterpressure die casting:反压压铸,背压压铸
corrosion resisting casting抗腐蚀铸件 | counterpressure die casting反压压铸,背压压铸 | cup-shaped casting杯形铸壳,杯形铸件
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indenter:压头
压针(indenter) 邵氏、韦氏、巴氏、国际橡胶等硬度计的压头压痕(indentation) 由于试验力作用,压头(或压针)压入试样表面而产生的变形;压头(indenter) 硬度计上压入试件,具有规定开关的部件.
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ball indenter:球压头
2、工作压头(working indenter) 按照国家检定规程规定的,用于测定试件或试样硬度值的压头;3、硬度合金球压头(hard metals spherical indenter)以碳化钨为主要成分,具有一定直径的球形压头;4、球压头(ball indenter) 由规定直径的钢球和压头体组成的压头;
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working indenter:工作压头
压痕(indentation) 由于试验力作用,压头(或压针)压入试样表面而产生的变形;1、标准压头(standard indenter) 按照国家检定规程规定的,用于检定标准硬度块的压头;2、工作压头(working indenter) 按照国家检定规程规定的,用于测定试件或试样硬度值的压头;
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overpressure:超压
1.冲击波的压力:冲击波的压力有超压(overpressure)、动压(dynamic pressure)以及负压(underpressure,negative pressure)三种. 压缩区内超过正常大气压的那部分压力称为超压;高速气流运动所产生的冲击压力称为动压. 波阵面上的超压和动压最大,
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equalized tip:均压电极头,均压电极头,均压焊嘴,均压焊嘴
equalized heat distribution ==> 等热分配法 | equalized tip ==> 均压电极头,均压电极头,均压焊嘴,均压焊嘴 | equalized tip holder ==> 均压焊嘴夹头,均压焊嘴夹头
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main ballast tank:主压载舱主压载水舱
main ballast tank 主压载舱主压载舱主压载水舱 | main ballast tank 主压载舱主压载水舱 | main ballast 主压载
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main ballast tank:主压载舱主压载舱主压载水舱
main ballast tank 主压载舱 | main ballast tank 主压载舱主压载舱主压载水舱 | main ballast tank 主压载舱主压载水舱