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littlecap8

银虫 (小有名气)

[求助] 请虫友帮助翻译一句英文,谢谢啊~

Our observations show a facilitation of the growth of primary trunks or lateral branches, suppression of side branching, dendrite remelting and fragmentation. The manifestation of all phenomena depends on the dendrite orientation, local direction and intensity of the flow. The forced flow eliminates the solutal plumes and damps the local fluctuations of solute concentration.  It provokes a preferential growth of the secondary arms at the upstream side of the primary dendrite arms, whereas the high solute concentration at the downstream side of the dendrites can inhibit the formation of secondary branches completely. Moreover, the flow changes the inclination angle of the dendrites and the angle between primary trunks and secondary arms.
这篇文章讲的是自然和强迫对流对Ga-In合金枝晶凝固的影响。为了方便虫友看,我给出了部分前后文。只需要理解划线部分的一个句子就可以了,其中划线句子中的solutal plumes很是理解不了。

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BiolinChina

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littlecap8: 金币+1, 有帮助 2015-06-03 14:35:30
我觉得是大片的溶质析出,形成是羽毛状的结晶
4楼2015-06-03 14:19:07
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genhunter

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littlecap8: 金币+1, 有帮助 2015-06-03 14:35:37
如有上下文会有所帮助。我是纯粹猜的:

结晶由局部浓度过饱和引起,不少有羽毛状外观,所以

solutal plumes好不好理解为  羽毛状的溶质的(结晶)呢?
离成功还差一点
2楼2015-06-03 13:27:30
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苏菲英

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littlecap8: 金币+13, 翻译EPI+1, ★★★★★最佳答案, 谢谢== 2015-06-03 14:35:15
“The forced flow eliminates the solutal plumes and damps the local fluctuations of solute concentration.”
我也是金属凝固方向,首先这里的solutal我们看词根solu就知道是与溶解有关的,Chaos. 1997 Mar;7(1):107-124.
Plume dynamics in quasi-2D turbulent convection.Bizon C1等人这篇文章中主要讲了这个现象,流体力学中称为羽流,文章摘要中有这样一句话:Time sequences of the full concentration fields from experiment and simulation display a large number of solutal plumes that are born in thin concentration boundary layers, merge to form vertical channels, and sometimes split at their tips via a Rayleigh-Taylor instability. 文章摘要中有这样一句话:就是说溶质羽流容易在薄的溶质富集边界层中产生。
所以这句话可以这样翻译,仅供参考:
强制对流消除了溶质羽流,且抑制了该区域溶质富集的波动。
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3楼2015-06-03 13:48:30
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