查询词典 eddy current loss

On the basis of the analysis and comparison of some sensors, Eddy Current Sensor is selected, and its equivalent circuit, strength and depth of the eddy current, radial distribution of the current, axile intensity of the magnetic inductorium are all analyzed. The processing circuit of sensors signal is designed. Because of coupling problem of the sensors, differential measurement of sensor is applied.

在分析比较各种传感器特性的基础上，选择了电涡流传感器作为转子位移的检测元件；分析了电涡流传感器的等效电路、涡流强度和深度、涡流的径向分布、线圈轴上的磁感应强度；设计了传感器的信号处理电路；对于传感器始终存在的偏置耦合问题，提出了传感器差动测量的方法。

In my viewing the Sea from that Hill where I stood, I perceiv'd a strong, and indeed, a most furious Current, which run to the East, and even came close to the Point; and I took the more Notice of it, because I saw there might be some Danger; that when I came into it, I might be carry'd out to Sea by the Strength of it, and not be able to make the Island again; and indeed, had I not gotten first up upon this Hill, 1 believe it would have been so; for there was the same Current on the other Side the Island, only, that it set off at a farther Distance; and I saw there was a strong Eddy under the Shore; so I had nothing to do but to get in out of the first Current, and I should presently be in an Eddy.

从我所站的小山上向海上放眼望去，看见有一股很强很猛的急流向东流去，差不多一直流到那岬角附近。我进一步仔细地观察了一下，因为我发现，这股急流中隐藏着危险。如果我把船开进这股急流，船就会被它冲到外海去，可能再也回不到岛上了。说真的，假如我没有先爬上这座山观察到这股急流，我相信一定会碰到这种危险的。因为，岛的那边也有一股同样的急流，不过离海岸较远，而且在海岸底下还有一股猛烈的回流；即使我能躲过第一股急流，也会被卷入回流中去。

High strength: Aluminum-magnesium-silicon alloy wire possesses high strength, its min value of tensile strength is 170% of the value of general hard and round aluminum wire(H8), is a fine armored material;②Low loss:as a non-magnetism material, no eddy current loss will happened on aluminum-magnesium-silicon alloy wire; when under 20℃, itsunit resistance corresponding to 52.3~53.0%IACS (international annealed copper wire standard), so that, the heat loss caused by induced current is very low;③Light weight: the density of aluminum-magnesium-silicon is only 2.7g/cm3 it largely reduced the total weight of armored cable.

该电缆突出的优点是：①高强度：铝-镁-硅合金丝具有较高的强度，其抗拉强度的最小值都是普通硬圆铝线（H8）抗拉强度的170%，是一种较好的铠装材料；②损耗小：铝-镁-硅合金丝为非磁性材料，不存在涡流损耗；其在20℃时的电阻率相52.5~53.0%IACS，因此由感应电流产生的热损耗很小；③重量轻：铝-镁-硅合金丝的密度仅为2.7g/cm3，明显降低了铠装电缆的整体重量。

Whole-cellpatch-clamp technology demonstrated that VDPG (1g/L) had notsignificant effects on the delayed-rectified K~+ current, TTX-sensitive Na~+ current and high-voltage-activated Ca~(2+) current of rat dorsalroot ganglion cells. The fast transiet K~+ current of cottonbollworm dorsal DUM cells, the fast transiet K~+ current, Na~+ current andhigh-voltage-activated Ca~(2+) current of Periplaneta Americana dorsalunpaired median cells were also not significantly affected byVDPG at the same concentration. However, VDPG had significant effecton the fast transiet K~+ current of Pieris rapae. The VES had not significanteffects on the high-voltage-activated and low-voltage-activated Ca~(2+)current of rat DRG cells.

膜片钳电生理实验显示1g／L毒囊粗毒对蜚蠊DUM神经元的快瞬时钾电流、钠电流、高电压激活的钙电流，对棉铃虫快瞬时钾电流和大鼠DRG细胞延迟整流钾电流、TTX-S型钠电流、高电压激活的钙电流均无明显作用，却对菜青虫快瞬时钾电流有明显作用；电刺激粗毒对大鼠DRG细胞低电压和高电压激活的钙通道无明显作用。

In 2D eddy current field computation, for the first time, this dissertation proves that there is an analytical solution of infinite series convegence for the problems satisfying the MT expansion condition, derives the MT general solution formula and the using laws, proves or explains the using rules that are used in the GMT and but they can't be proven or explained by the GMT, and solves several real engineering examples of 2D eddy current field boundary-value problems by the MT.

本文从电磁理论和有关数学定理出发，通过引入内极、外极、内交角的概念，建立一种新的电磁场计算体系——电磁场分析中的多极理论；从理论上证明，在电磁场分析中存在一种无穷级数收敛，且有一定普遍性的解析解。

The lift-off effect of eddy current is an important factor in eddy current testing.

涡流检测中的提离效应是影响涡流检测的一项重要因素。

Pulsed eddy current testing is a new development area of eddy current testing technology.

脉冲涡流检测方法是涡流检测技术的一个新兴分支。

The pulsed eddy current testing is a new development area of eddy current testing technology.

脉冲涡流检测方法是涡流检测技术的一个新兴分支。

Boundary polynomial point interpolation mesh-free method and boundary radial point interpolation mesh-free method were presented, based on polynomial basis and radial basis respectively for transient eddy current analysis, and their interpolation shape functions satisfy the Kronecker delta function and the essential boundary conditions can be directly imposed on the boundary nodes. An example on analyzing transient eddy current of a square metal column was set to prove the validity of the proposed methods, and a comparison on accuracy between BPPIM and BRPIM was analyzed as well.

运用多项式点插值法和径向基点插值法构造形函数，推导了适合于工程电磁场瞬态涡流问题的多项式基点插值边界无单元方法和径向基点播值边界无单元方法，这两种方法的空间插值形函数满足Kronecker delta条件，从而强加边界条件可以直接施加在边界点上，以金属长方柱的瞬态涡流分析作为数值算例，证实了两种方法的正确性和有效性，并对两种基类的点插值法进行了精度分析和比较。

Firstly, the basic character of the remote filed eddy current is simulated and analyzed in case of two-dimension axial symmetry which approves the existence of remote filed eddy current phenomenon; the full circumferential defect model is investigated to approve the feasibility of using the RFEC techniques to detect the position and depth of defect; the pit corrosion、circumferential and axial crack models are simulated, and the defect character based on voltage plane polar plot and the changes of phase and amplitude are analyzed to supply the standard for defect reconfiguration.

首先，在二维轴对称情况下仿真与分析了远场涡流的基本特性，证实了远场涡流现象的存在；对全周向缺陷的远场涡流检测进行了详细研究，证实了远场涡流检测缺陷位置和深度的可行性；对点状腐蚀、轴向与周向裂纹三种非轴对称缺陷进行三维有限元仿真，利用相位差和幅值变化曲线与电压平面极坐标图对缺陷特征进行分析，为缺陷形状重构提供了依据。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。