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大爆炸

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Its maximum explosion pressure and the maximum pressure rise speed is higher than under obviously the same density the pure aluminite powder and time the pure cyclotrimethyl dust explosion value.

其最大爆炸压力和最大压力上升速率明显高于相同浓度下纯铝粉和纯黑索金粉尘爆炸时的值。

Pair of aluminite powder and the cyclotrimethyl mix dust's detonation characteristic has conducted the experimental study, as well as the maximum pressure rise speed and the mix dust's allocated proportion relations may see two kind of dust from its maximum explosion pressure when certain allocated proportion, both existence synergism.

对铝粉与黑索金的混合粉尘的爆炸特性进行了实验研究,从其最大爆炸压力以及最大压力上升速率与混合粉尘的配比关系可以看出两种粉尘在一定配比时,两者存在协同作用。

Regarding the general industrial dust aluminite powder, the firing delay time and the most tremendous pressure rise speed influence is very obvious to its maximum explosion pressure; Its maximum explosion pressure and the maximum pressure rise speed reduces along with the dust granularity increases: And increases the tendency to be obvious; Has a best dust loading, causes its maximum explosion pressure and the maximum pressure rise speed maximizing.

对于一般工业粉尘铝粉来说,点火延迟时间对其最大爆炸压力和最大压力上升速率的影响十分明显;其最大爆炸压力和最大压力上升速率随着粉尘粒度的减小而增加:且增加趋势明显;存在一个最佳粉尘浓度,使其最大爆炸压力和最大压力上升速率达到最大值。

These models has been replaced with a more refined variant, news articlesspecified a big bang model.

善的变型代替时,新闻报导就会针对这个大爆炸模型宣告说,这个大爆炸

According to the Big Bang model, the universe today came into existence after an explosion from a singular point 14 billion years ago.

目前的宇宙大爆炸理论认为:今日宇宙,约源于前140亿年左右的一次"奇点"大爆炸

According to the Big Bang model, the universe expanded from an extremely dense and hot state of energy. About one second after the explosion, the temperature dropped to 10 billion degrees.

大爆炸理论讲:当时"奇点"的密度极大、温度极高,能量也极大,大爆炸后约1秒时,"奇点"温度就降到了100亿度左右

PROF.: Let's talk about the Cambrian explosion,"biology's big bang."

我们今天讨论的话题是寒武纪大爆炸,也是"生物世界的大爆炸。"

Regardless to the research development or industrial application, nano metal powders are extensively discussed. Within these powders, the flammable and explosible nano aluminum, titanium and iron powders produce a great amount production and apply widely. Meanwhile, the surface/volume ratio of powders is increased significantly under nano scale, in which to enhance the ignition opportunity. Thus, the dust explosion hazard risk of nano powders could remarkable rise. In addition, the comparison of explosion phenomenon, test methods and quantification parameters between nano and micro scale is necessary to deeply investigate further. So that this project operates the explosion characteristic experiments to measure and determine such the maximum explosion pressure, minimum explosion concentration and explosion characteristic Kst value on above mentioned three nano metal powders. Expectantly, to provide the appropriate recommendations of safety prevention for nano dust explosion based on the experimental results.

奈米金属粉末无论是研究发展或是工业界应用,目前皆是广泛讨论研究之材料,其中,奈米铝粉、奈米钛粉以及奈米铁粉等可燃、爆性粉末,均有高额产量及大量应用领域,与此同时,在粉末粒径进入奈米尺度的情况下,粉尘比表面积大幅提升,增加此三种粉尘可被点燃的机会,因此,潜在的粉尘爆炸危害风险将广幅增加,另外,微米尺度粉尘爆炸的现象、测试方法以及量化参数是否具有相同的实验尺度基点,也需要深入探讨,故本次计画针对上述三种奈米金属粉末,进行三种不同粒径的爆炸特性参数实验,如最大爆炸压力、最低爆炸浓度以及爆炸特性参数Kst值之量测与计算,期能量化其粉尘爆炸特性,并据此提出适当的安全防护建议。

But he conjures a sense of terror more in glints and echoes than in great explosions.

但是,他更多通过爆炸后的火光和回声中来唤起人们的恐惧感,而不是大爆炸

Estimates are the Tunguska Event was as strong as at least 10 megatons of TNT and perhaps a thousand times more powerful than the atomic bomb dropped on Hiroshima.

据估计,通古斯大爆炸产生的威力至少相当于10兆吨TNT炸药爆炸产生的威力,或许比美国投在广岛的原子弹的爆炸威力强数千倍。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。