查询词典 emission theory

At first, this paper gave the definition of real efficient secondary electron emission coefficient and discussed its relation the incident energy of high energy primary electron in metal in theory.

提出有效真二次电子发射系数的概念，并从理论上论述了高能原电子的能量与金属的有效真二次电子发射系数的关系，然后用实验数据证明了该理论的正确性，最后对结果进行了讨论。

The secondary electron emission avalanche model is the most dominant theory of surface flashover in vacuum.

提高晶化温度或延长晶化时间也能在一定程度上提高其表面耐电性能，但是这样做会降低其可加工性能。

This work was followed by worldwide research aimed at improving understanding of the theory of stimulated emission in semiconductors.

各国相继进行广泛研究，以进一步探讨半导体中的受激发射理论。

It shows that the thermionic emission current can be influenced by the temperature, the work function, the diameter of the surplus RE particleand the electric field. The "nanometer particles" theory modification concentrates mainly on two parts. First, the active layer was described.

对"纳米微粒子"发射模型进行两方面的完善：其一、描述了表面活性物质层是非连续的薄膜；其二、当稀土氧化物晶体中的氧缺位浓度超过临界值的时候，即开始有纳米稀土粒子的形成和生长。

The present paper is a criticism of the application of the monoatomic layer and simple dipote theory to thermionic emission.

本文对热电子发射中应用单原子层和偶极子理论作了分析和批判。我们认为：1。单原子层的存在不是无条件的，它与基底的温度、结构、纯度和外界真空度都有关系；2。

Current researches of searching, observation and theory on extragalactic H2O megamaser sources and associated molecular emission lines are mainly reviewed in this paper.

主要评述对河外H2O超脉泽源及与其相关分子谱线的搜索、观测和理论研究现状。

Language. The result show that outburst coal structure can be divided according to features of geology, logging and physical mechanics; according to basic features and mechanism of gas outburst, with geology factors, mathematical geology model predicting gas content, emission and outburst can be established by quantification theory; the result of prediction for gas danger in Huainan Pansan mine by predicting model is relatively reliable, and the weaved map of gas geology can meet the need of production; the design of gas danger prediction software make prediction more convenient and fleeter.

结果表明，根据突出煤体的地质、测井和物理力学特征可以划分突出煤体结构；根据瓦斯突出的基本特征和机理，采用地质因素，利用数量化理论可以建立瓦斯含量、涌出量及突出预测的数学地质模型；利用预测模型对淮南潘三矿瓦斯危险性的预测结果较为可靠，编制的瓦斯地质图可以满足生产的要求；瓦斯危险性预测软件的开发使预测更为便捷和快速。

Thus, a systematic study of the chromium-doped forsterite, both in theory and experiment, is of importance, not only to the explanation of the emission mechanism of the crystal, but also to the revaluation and utilization of the characteristics of Cr ions as well.

因而，从理论和实验上对Cr：Mg〓SiO〓晶体进行系统的研究，不仅对解释该晶体的发光机理，而且对重新认识铬离子的特性乃至发掘其潜力，都有重要的意义。

In this model, the monitored acoustic emission information is changed into prediction data based on the gray theory, and the Prediction data are trans-formed into an essential format of cusp catastrophic model via the least-square principle curve fitting and the differential coefficient homeomorphous change.

首先运用灰色理论对声发射监测数据进行处理，得到预测数据，运用最小二乘曲线拟合展开，再通过微分同胚变换，转换为尖点突变模型的基本形式，从而建立了灰色突变预测模型。

Firstly, data processing method based on gray theory is used to change acoustic emission information into prediction data. Then prediction data is transformed into essential format of cusp catastrophic model by the least squares principle curve fitting and differential coefficient homeomorphous change. Finally, the gray and catastrophic prediction model is put forward to forecast failure time of rock slope.

首先运用灰色理论对声发射监测数据进行处理，得到预测数据，运用最小二乘曲线拟合展开，再运用微分同胚变换，转换为尖点突变模型的基本形式，建立灰色突变预测预报模型，从而对崩塌的时间进行预报。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。