查询词典 ignited

The plasma ignition threshold of metal is got through experimental and numerical study. The vapour and plasma ignition times of the target are got based on the equation of heat conduction and cascade model. We suppose that the plasma is ignited when generations of new electrons are born in vapour generation time. The influence of temperature on the thermodynamics and optics parameters of material also have been considered in the model. The resulting theory has good agreement with the experiment and overseas report. A blade method to measure the laser spot is given in this paper with validation and error analysis. The plasma threshold of metals in atmosphere and water ambients both are diagnosed with the light deflection and piezoelectric transducer. A Q-switched pulsed Nd:YAG laser operating at infrared (1064nm), visible(532nm) and ultraviolet (355nm) wavelengths has been used. Al、Fe、Cu are used as targets and get a similar results with both method. Theoretical and experimental analyses are applied on the influence of wavelength on the threshold have been done, both of which have shown that the plasma threshold of metals decrease as the laser wavelength increases; The plasma threshold of metals are higher in water than in air and the pressure of the shock wave in water is five times higher than in air .

从热传导方程和雪崩电离机制出发，假设当电子增值210倍时，考虑了温度对材料热力学和光学参数的影响时，得到了气化和等离子体点燃的时间，利用该模型进行计算得到的结果与国内外报道及自行通过实验测得的阈值基本一致；提出了利用刀刃法测量激光光斑面积的方法，并通过实验进行了验证和误差分析；利用光偏转装置和压电换能器分别对空气和水中金属等离子体点燃阈值进行了实验诊断，激光器均为调Q－YAG激光器（波长1064nm，532nm，355nm，脉宽10ns），靶材分别为Al、Fe和Cu，两种测试方法得到的等离子体点燃阈值基本一致；本文从实验和理论计算两个方面讨论了波长对等离子体点燃阈值的影响，均得到了等离子体点燃阈值随著波长的增加而减小的结论；对空气中和水中不同环境下金属等离子体的点燃阈值进行了比较研究，得到了金属在水中的等离子体点燃阈值比空气中的大，且水中产生的冲击波的压强是空气中的5倍左右的结论。

Methods From January 1988 to march 2000, 206 cases(male 150, female 56; age from 5 to 78 years) of gastric bezoars were treated successfully using endoscopic lithotripsy by laser ignited mini-explosive technique.

方法从 1988年 1月到 2 0 0 0年 3月应用内镜下激光引爆碎石术，共治疗胃结石病人 2 0 6例，其中男性 15 0例，女性 5 6例，年龄5～ 78岁。

This in turn ignited a mad fury of fabricating, mold making and intermediate casting for not only the bosses, but capstans, cleats, and the periscopes.

这反过来又点燃了疯狂的愤怒，编造，模具制造和中间铸造，不仅老板，但capstans ， cleats ，和潜望镜。

Work out how old the oldest chondrules are, and you know when the sun ignited.

得出最老的陨石球粒的年龄，你就可以知道太阳是什么时候开始燃烧的。

Various parts made of GH202 and GH586 superalloy were ignited and combusted only in high pressure oxygen-enriched atmosphere for short time.

对GH202、GH586合金部件在高温富氧工况下极短时间内就发生燃烧事故的原因进行了分析。

The police later arrested a bitter ex-employee of the factory who had ignited the fight by starting a rumor that 6 Uighur men had raped 2 Han women at the work site, Xinhua reported.

警方随即逮捕了煽风点火造成斗殴的人，他是一名怀恨在心的工厂前雇员，他造谣说有6名维吾尔男子在工作场所强奸了2名汉族妇女。

Orlando, the "fire" ignited Spring Festival Evening, is also the general public in the hot with.

魔术这把&火&点燃了春晚，也正在普通市民中火热着。

Historically, gas fryers have not been very efficient. Gas is ignited in tubes running through or around the frying vat but the typical design allows much of the heat to escape directly up the flue.

煤气在管子中被点燃，然后通过或围绕着油炸桶，但是这种典型设计使得多数的热能从烟管中流失了。

The pH value of ignited gangues declined, nutrient status of surface gangues was bad, and species and quantity of gangue microbe were small.

自燃后的煤矸石pH值降低，表层煤矸石养分状况差，微生物种类和数量均偏少。

Police have detained 5 coal mine executives after 12 people died Sunday when a gas pocket ignited in a shaft of the Donggou Colliery in Jiexiu, Shanxi, Xinhua reported.

据新华社报道，27日，山西省介休市东沟煤矿发生瓦斯燃烧事故，造成12人死亡，5名矿方人员已经被公安机关控制。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

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。