critical current density 中文意思是什麼
critical current density
解釋
臨界電流密度-
Effect of precursor powder on microstructure and critical current density of - 2223 tapes
銀超導帶材的顯微結構及臨界電流密度的影響 -
The calculations axe based on the equation of current motion with temperature and field - dependent critical current density, and the heat dissipation produced by flux motion in the normal state region and the superconducting state region
此計算基於電流運動方程，考慮到電流密度是溫度和磁場的函數，考慮到在正常區和超導區由磁通運動產生的熱耗散。 -
Pic simulations are performed to determine gap scaling in a high density pegs. comparisons of simulation results with simply theory results and experiment results, indicate that the pegs gap is always equal to the critical gap for magnetic insulted electron flow. it is important to note that, the vacuum electron flow to the anode causes current loss and the
另外，根據模擬結果還得到了兩個重要結論：電流損失是由真空漂移電子的出現所造成的，電流損失的大小與負載阻抗成近似正比關系；負載阻抗等於peos的流阻抗時，負載獲得功率最大。 -
A modified definition of polarization resistance calculated from the equivalent circuit of eis make its value dependent on the grain size. in anodic polarization test ( sweeing and stair - steps ), the maximum ( critical ) current density increases while the passivation potential and breakdown potential lowers with the reduction of the grain size. fegsem images showed the grain growth and pitting corrosion of the nc copper surface, uniform corrosion in the mc copper surface and the broken passivation layer in both surfaces
在陽極極化實驗（包括掃描法和臺階法）中，致鈍電流雖晶粒尺寸減小而增大，而致鈍電位和擊穿電位都隨著晶粒細化而降低。 fegsem照片發現了納米晶銅的晶粒長大和孔蝕，微米晶銅表面的均勻腐蝕，和兩種銅表面破碎的鈍化膜。 -
In neutral solution containing chloridions, the nc copper has a more positive corrosion potentialanodic polarization test revealed that the nc copper has a lower passivation potential, critical current density and passivation current density
Eds分析表明納米晶銅蝕孔中的s和cl含量遠高於表面。在中性含氯溶液中，納米晶銅的腐蝕電位比微米晶銅高300mv 。 -
The critical current density of pure mgb2 is comparable to that of triniobium tin at low magnetic fields but falls off much more rapidly at higher fields
在低磁場下，硼化鎂的臨界電流密度與三鈮化錫相當，但是在較高的磁場下卻下降得很快。 -
Currently one of the major challenges associated with making mgb2 a useful superconducting material is to increase its critical current density at higher magnetic fields
要將硼化鎂製成有用的超導材料，目前最主要的挑戰之一，就是如何在較高的磁場下增加臨界電流密度。 -
For current densities above the critical current density, the vortices ( the small nonsuperconducting regions of the sample ) start to slip or move
一旦這些區域開始移動，能量就會損耗，也就是說材料的電阻值不再為零。 -
On the other hand, in the four years since the discovery of superconductivity in this compound, the research community has made considerable improvements in critical current density, both in the low - field value and, perhaps more important, in the higher - field values
另一方面，在發現這個化合物具有超導性的四年後，不論是在低磁場，或者是在更重要的較高磁場下，這個研究領域的專家已經將臨界電流密度提高了許多。 -
For hts maglev vehicle, cylindrical bulk superconductors with the thickness of 25mm are better to provide enough guidance force and keep enough levitation height when they are field cooled above the ndfeb guideway. the trapped flux ability of superconductors is influenced by the weak links and critical current density and can be reflected by the levitation force. it has no direct relationship with its density
超導體塊材自身的密度跟它的俘獲磁通能力之間並沒有直接的聯系，影響超導體俘獲磁通能力的是超導材料內的弱連接和材料的臨界電流密度，而超導體在一定外場下受到的懸浮力能夠在一定程度上反映出它的俘獲磁通性能。
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