电流的

In the case of ensuring the continuity of the wavefunction and the closing of the current, the analytic expression of the transmission coefficient is derived and the transmission properties are analysed.

在满足波函数的连续性以及电流的闭合性的情况下，得出了透射系数的解析表达式，并根据此表达式分析了电子的输运特性。

By regression analysis of the obtained data, a relationship has been found between the bath depth and ingot height, which can be expressed by an exponential function, h(0,Y)=A e-B/Y, where A is the asymptotic value of the exponential function (when Y→∞hmax=A), B is a shape coefficient of the curve.

通过对已得数据的回归处理，找出了熔池深度h及锭高Y间的相关规律，得到h_(0，Y)=A·e_的指数函数关系，A是指数方程的渐近线，当Y+∞时h_(max=A是曲线形状系数。A和B均为重熔电流的函数，A=f_1，B=f_2，所以，h_(0，Y)=f_3。

When the Biot-Savart Law is used to compute the magnetic field of a linear current, the different, choice of the integral variables will give rise to two different expressions.

用毕奥-萨伐尔定律计算一段直线电流的磁场时，因为积分变量的选取不同，产生了两种不同的表达式，在对积分变量的取值范围作了分析与比较后，更新了有关教材中的表述方式。

To research the propagation characteristics of travelling wave along transmission line in depth, the authors establish a mathematical model of travelling wave along lossless transmission line with the format of discrete time and space mesh lines, derive the stable condition and boundary condition of the wave equations using numerical solution of partial differential equation, and attempt the simplification of the boundary condition to realize full decoupling of voltage and current.

为深入研究行波在配电线路上的传播特性，建立了时间-空间网格线离散格式的无损传输线行波数学模型，采用偏微分方程的数值解法推导了波动方程的稳定条件和边界条件，并尝试对边界条件进行简化，以实现电压和电流的完全解耦。

As many as four-fifths of all the cells in the electric eel's body are specialized for generating electricity, and the strength of the shock it can deliver corresponds roughly to length of its body.

在电鳗的身体里，多至五分之四的细胞都专门用来发电，而且发出的电流的强度大约和它身体的长度成正比。

As many as four-fifths of all the cells in the electric eel's body re specialized for generating electricity,and the strength of the shock it can deliver corresponds roughly to the length of its body.

在电鳗的身体里，多至五分之四的细胞都专门用来发电，而且发出的电流的强度大约和它身体的长度成正比。

As many as four-fifths of all the cells in the electric eel\'s body are specialized for generating electricity, and the strength of the shock it can deliver corresponds roughly to the length of its body.

在电鳗的身体里，多至五分之四的细胞都专门用来发电，而且发出的电流的强度大约和它身体的长度成正比。

In this paper,the spark current caused by capacitor discharge during the process of spark plug gap breakdown is simulated by modeling the equivalent circuit of the second-circuit capacitor discharge of the auto ignition system.

现通过建立汽车点火系统次级电路火花放电的等效电路模型，模拟了火花塞间隙击穿过程中由于电容放电引起的火花电流的变化以及对周围环境的影响。

Lisanby MD a , Nancy Payne CSW a , Robert M. Berman MD, PhD a , Eva-Lotta Brakemeier MA a , Tarique Perera MD a and D.P. Devanand MD aaDepartment of Biological Psychiatry, New York State Psychiatric Institute and the Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY

哥伦比亚大学的科学家Harold Sackeim 和同事对90名抑郁症患者随机地实施了单侧或双侧脑电休克疗法，其中一部分使用传统的电休克疗法，另一部分使用采用&ultrabrief pulse&电流的新疗法，并跟踪观察了临床治疗效果和认知副作用的发生情况。

The great German physicist, Nernst, found that the longer an electric current was made to flow through a filament of oxide of magnesium, the greater became the conductivity of the filament.

著名的德国物理学家 Nernst 曾发现在氧化镁的细丝中通过电流的时间越长，那么这根细丝的导电性就越好。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。