查询词典 zero

There is a zone of zero charge besides two sides of iron sulfide film with different electric charge.

因此溶液中S2-的存在，促进了铁的阳极溶解，从而加速了基体金属的腐蚀。

This is a necessary condition for the electric field to be zero .

这是使电场为0的一个必要条件。

Our proprietary setup procedures enable us to plate in deep cavities, while maintaining electroform thickness with zero porosity.

我们拥有专利权的设置程序可以进行深腔镀膜，同时在无孔隙的情况下保持电镀厚度。

The structure, the auxiliary ionic membrane and operations of electrolyzer with high current density and zero polar distance were introduced.

近年来，不论是盐水的精制方法、电解槽型、电极材料，还是离子膜本身的性能都有了飞跃发展。

Due to its good effect in the reservation of information of signal abrupt change, mathematical morphology is often applied in the detection and location of short-term power quality disturbance, however, there is still a defect of invalid detection existing in partial detection methods based on mathematical morphology while some zero-crossing disturbances are detected. In this paper three mathematical morphology based disturbance detection and location methods, i.e., the method based on first-order derivation and morphological gradient, the method based on morphological gradient and soft threshold processing and the method based on dq decomposition and top-hat transform, are analyzed, that is, by means of simulation the adaptability of these methods in the analysis on the signals of voltage sag, voltage swell and electromagnetic transient oscillation is compared.

数学形态学因其在保留信号突变点信息方面有很好的效果，因此常用于短时电能质量扰动的检测和定位，但基于数学形态学的部分方法仍存在对某些过零点扰动检测失效的缺点，文章分析了3种基于数学形态学的扰动检测和定位方法，即基于1阶求导和形态梯度的方法、基于形态梯度和软阈值处理的方法、基于dq分解和高帽变换的方法，通过仿真比较了3种方法在分析电压暂降、电压暂升、电磁暂态振荡等信号方面的适应性，结果发现基于dq分解和高帽变换的方法在检测过零点扰动时具有很好的效果，因此选取这种方法对实测扰动数据进行了检测和定位分析。

It is indicated that the electron affinity is changed by the isotope substitution due to the zero-point vibrational energy effect.

表明这种由于零点振动能效应使得同位交换平衡常数偏离1的现象可以用于富集和分离同位素化合物。

In the activation process, only the first admitted Cs quantity brings the GaAs surface zero electron affinity state can the NEA photocathode be reached.

在交替过程中，导入过量的Cs量也是必要的，不仅能获得较高的灵敏度，而且有利于提高阴极的稳定性。

The interactions of dsDNA and ssDNA with two osmium complexes have been studied by surface electrochemical methods based on DNA modified electrode. It is found that both osmium complexes bond DNA with electrostatic interaction. And some thermodynamics and kinetics constants, such as bindind constant , ratio of binding constants K〓/K〓, limiting ratio K〓°/K〓°at zero ionic strength (μ＝0), free energy ΔG〓, dissociation rate constant k and binding site size s have been obtained.

研究发现两种锇配合物都是通过静电作用与DNA结合，并计算得到联吡啶锇和二氯菲咯啉锇与dsDNA和ssDNA相互作用的结合常数、结合常数比K〓／K〓、μ＝0时极限结合常数比K〓°／K〓°、结合自由能ΔG〓、解离速度常数k和结合位点数s等多个热力学和动力学参数。

The improved system utilizes good properties of elliptic curve cryptography system and adopts zero knowledge proof .

改进的系统利用了椭圆曲线良好的密码特性，并采用零知识证明方法。

The zero-knowledge status authentication is a fascinating question of contemporary password research, and the elliptic curve is the cipher system having higher security in comparison with others.

零知识身份认证是当代密码研究的一个引人入胜的问题，而椭圆曲线相对于其它密码体制具有更高安全性。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。