source density

For any information source on a countable set, the limit properties of relative likelihood ratio and log-likelihood ratio of entropy density with respect to the independent geometry distribution, an important problem in the information theory is discussed.

对任意的可列集上的信息源，探讨信息论的-个重要问题，即探讨了相对于独立型几何分布的熵密度似然比与对数似然比的极限性质。

Analysis of the Stable Neutron Density of Reactor with Extraneous Neutron Source

对有外加中子源时反应堆中子密度稳定值的分析

To traditional single or double face PCB, which is usually of low density, DC platting power source is satisfying.

对于密度较低的单、双面板，采用常用的直流电镀电源即可满足要求。

The velocity potential is expressed by using a simple source density distribution over the wetted hull which is influenced by the ship-wave and over the local portion of the wavy free surface. The free surface equations are exactly nonlinear equations.

速度势用考虑了波动的自由面影响的船体湿表面和局部真实的自由面上的简单源（1/r）分布表示，并采用精确的自由面条件。

Measurement of absolute thermal neutron flux density in the core of miniature neutron source reactor

中毒法测量微堆堆芯热中子绝对通量密度

We think it is related to the fluctuations of the plasma density and the magnetic field of the source region in a small space scale.

我们认为这可能与小尺度空间内spike辐射源区的等离子体密度出现短时标的波动及磁场强度的起伏有关。

The experiments indicate that the use of source materials with high purity, BN effusion cells, and the cryopump in the system play important roles in reducing the threshold current density of the lasers and improving their optical and electrical performance.

实验表明，生长过程中采用高纯度的源材料，氮化硼的泻流盒以及生长系统中的低温泵等对降低器件的阈电流密度，改善激光器的光电性能起到重要作用。

The error sources of IRO are analyzed. The spherical symmetry approximation of electron density is the main source of the inversion error.

分析电离层掩星误差源，指出电子密度分布的局部非球对称性是电离层掩星的主要误差源。

Micro Thermophotovoltaic ( MTPV) is a combo that it is integrated by micro system and energy source. Because the expectant energy density is 10 to 100 times as the best cell, so people give more and more attention on it.

微热光电系统（MTPV）作为微系统和能源领域的结合体，由于其预期的能量密度可以达到现有最好电池的10～100倍，所以成为人们关注的重点。

The aluminum air battery is brand new chemical power source with abundance in nature, low price, high energy density and long life.

铝空气电池作为一种新型高能量化学电源，其具有原料来源丰富、价格优廉、比能量高、使用寿命长等优点。