particle ['pɑ:tikl]
- particle的基本解释
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n.
粒子, 极小量, 颗粒, 质点, 小品词
- Particles of dirt settled on the tablecloth.
- 尘埃落在台布上。
- He is studying the properties of these particles.
- 他在研究这些粒子的性质。
- There is not a particle of truth in his report.
- 他的报告没有一点真实性。
- 相似词
- 相关歌词
- Particle Man
- The U.S.S. Make Shit Up (BiTrektual Version)
- The U.S.S. Make Shit Up
- Particle
- Kingfish Pies
- Enemy Gene
- particle所属的单词分类
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Science / 科学
[182]
xenobiology · materials science · genomics · evolutionary biology · earth sciences · Petri dish · volumetric flask · organic chemistry · molecular biology · exobiology
- 更多 网络例句 与particle相关的网络例句 [注:此内容来源于网络,仅供参考]
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The main research work of this paper are focused on following areas:(1) Based on review of the theory and methods on measurements of particle fields, a new idea for obtaining particle size and velocity distribution within a spray through imaging the particle field with a laser light sheet was put forward;(2) A DPIV (Digital Particle Image Velocimetry) system, is fit for velocity measurements of low speed flows, was developed and expended to particle size distribution measurement;(3) An arithmetic for particle velocity field reconstruction was developed, and the velocity distribution of water mist was also obtained;(4) A software system for particle analysis, which based on image geometry emend, de-noise and image partition was developed, the parameters such as particle size distribution, mean diameter, number of particles, minimum and maximum diameter can be got with this system;(5) A water mist system was developed and its characteristics, such as droplet velocity, size distribution, number of droplets and spray cone angle under different conditions were obtained from experiments with PIVS;(6) The measurement results of water mist characteristics with PIVS were compared and analyzed with the simply simulated results, and in addition, in order to verify the accuracy of PIVS, some experiments were conducted with the standard particles, such as glass-ball with known mean diameter of 50μm and 115μm, metallic coated tracing particle with mean diameter of 12μm;(7) Some experimental studies on interaction of water mist with liquid pool fires were conducted.
本论文的主要工作包括以下几个方面:(1)在对粒子场测量的相关理论和具体方法进行综述分析的基础上,提出了通过采用激光片光对粒子场进行成像以获取其粒径和速度等参数分布的新思路;(2)研制了适宜于低速流动速度场测量的DPIV(Digital Particle Image Velocimetry)系统,并使其实现了对粒子场粒径分布的测量功能;(3)研制了基于粒子运动轨迹的速度场重建算法,获取了细水雾雾场的速度分布;(4)研制了基于几何校正、去噪、图象分割等图象处理方法的"粒度分析软件系统",该系统既可分析给出粒子场的粒径分布直方图和平均粒径,还可给出粒子的数目以及最大、最小粒径等信息;(5)建立了一细水雾发生系统,并应用上述方法对不同压力条件下细水雾系统的雾场特性(如速度分布、雾滴粒径分布、雾滴的数目、喷雾张角以及雾化长度等)进行了实验测量研究;(6)对细水雾特性参数的PIVS测量结果与计算机简单模拟计算结果进行了定性比较分析,并利用平均粒径为50μm和115μm的玻璃球以及12μm的标准示踪粒子对PIVS系统的粒径和速度测量结果进行了实验验证,同时对其局限性进行了分析讨论;(7)对不同工况条件下细水雾与油池火相互作用的过程进行了模拟实验研究。
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The mainly conclusions in our research are as flowing: tungsten trioxide powders with 100 nm primary particle are obtained by spray drying,calcination and wet milling process, and an average size of quadric particle composed of agglomerated particles is 0.64 μm; tungtsen powders with 39 nm grain size and 60 -100 nm primary particle are produced directly from previous tungsten trioxide using one step reduction in hydrogen at 700℃, and an average size of quadric particle of tungsten powder is 2.91 μm; tungsten trioxide and copper tungstate compound powders with 100 nm - 200 nm primary particle are produced using ammonia metatungsten and copper nitrate as raw materials by spray drying,calcination and wet milling process;the compound powders are transformed completely into tungsten and copper compound powders by reduction in hydrogen at 700℃,in which tungsten grain size is 59 nm and copper grain size is 51 nm; primary particle size of compound powders is 80 - 120 nm,and an average size of agglomerated quadric particle is 1.86 μm; tungsten nitride powders with 35 nm grain size are prepared from tungsten trioxide powders by nitrogen treatment thoroughly in pure ammonia at 650℃, and an average size of agglomerated quadric particle is 0.64 μm in normal temperature.
研究结果表明:采用喷雾干燥—焙烧—球磨工艺可以制备出粒度约为100nm的WO_3粉体,它们在团聚后形成的二次颗粒平均粒度为0.64μm;采用一步直接氢还原方法可在700℃下从上述WO_3粉体制备出晶粒尺寸为39nm的、一次颗粒粒度为60-100nm的W粉体,其二次颗粒的平均粒度为2.91μm;以偏钨酸铵、硝酸铜为原料,采用喷雾干燥—焙烧—球磨工艺可制备出一次粒度为100-200nm的WO_3和CuWO_4混合粉体;采用氢还原工艺可在700℃下将这种粉体完全转变为W、Cu复合粉体,其中W的平均晶粒粒尺寸为59nm,Cu的平均晶粒尺寸为51nm;复合粉体的一次颗粒尺寸为80-120nm,在常温下团聚后形成的二次平均粒度为1.86μm;采用纯氨氮化工艺可以在650℃下由WO_3粉体制得WN,其晶粒尺度为35nm,在常温下团聚后的二次平均粒度为6.4μm。
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The study shows that in the radial direction the dynamic forces acting on the particle balance on the particle itself; there is not a so-called trajectory of the particle in which the composition of forces acting on the particles is zero, but there is a trajectory of the particle in which the radial slip velocity of particle is zero, the tra...
通过对固体颗粒的运动和受力分析发现固体颗粒在沉降过程中径向合力几乎处处为零,不存在所谓的径向合力为零的一个平衡轨迹面,但存在着一个径向沉降速度为零的轨迹面,这一轨迹面就是平衡轨迹面法所要寻找的;首次推导出了该轨迹面半径与固体颗粒直径、水力旋流器自身几何参数以及操作参数之间的定量表达式。
- 更多网络解释 与particle相关的网络解释 [注:此内容来源于网络,仅供参考]
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particle:粒子
相似地,德勒兹也把"不名誉的人"的看作是像一束光线中的一个"粒子"(particle)和一个音波似的存在:一个被权力召唤而"出现和说话"的个体[1]. 在这个意义上,福柯创造了一个配得上契诃夫(Chekhov)--他写了一个因使用铁路线上的螺栓称渔线重量而被送上法庭的农民--的文学效果.
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particle:质点
如同研究其他事物一样,研究机械运动先要描述机械运动,这一章描述的就是可以被看作质点(particle)的那些物体的机械运动,也就是说,质点运动学(particle kinematics)中的所有概念和方法都是为了描述质点的运动而引入的,实践证明,
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particle:颗粒
造成污染的原因:农药、杀虫剂使用的残余(residue)及颗粒(particle)对人类的危害规律:室内:调小音量(turn down) 宿舍隔音(sound proof) 意识到噪音没有(didn't realize)
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particle:微粒
边缘抛光的主要目的在于降低微粒(particle)附着于晶圆的可能性,并使晶圆具备较佳的机械强度,但需要的设备昂贵且技术层面较高,除非各户要求,否则不进行本制程.
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Coarse particle:粗粒
藉以采集近海面之大气悬浮微粒.由悬浮微粒浓度变化情况得知,2002年3~4月共有3次亚洲沙尘暴抵连澎湖群岛,其粒径分布很明显地由双峰分布(bi-modal distribution)转变为以粗粒(coarse particle)为主之单峰分布(single modal distribution).此外,
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