平均密度

Geoid is the equipotential surface that would be assumed by the sea surface in the absence of tides, water density variations, currents and atmospheric effects.

大地水准面指与平均海表面最接近的地球等势面，它反映了地球内部质量和密度分布的不均匀特性。

Then, in a transverse magnetic field, the bed expansion behavior, liquid-phase mixing characteristics and dynamic protein adsorption in the MSFB of the magnetic affinity adsorbent (mean size 153 mm, density 1.073 g/ml) made of agarose was studied.

在横向磁场中研究了平均粒径为153 m m 、密度为1.073 g/ml 的琼脂糖磁性粒子的磁稳流化床的膨胀规律、混合特性和蛋白质吸附行为。

As a result,the ray tracheid inner wall has sawtooth thickening obviously.The pit of cross field is windows and pine shape.The ratio of the tracheid length to width is about 50.Airdry density is about 598kg/m3.The shrinkage of difference is about 1.8;1%NaOH extraction and cell...

结果表明：紫杉木材射线管胞内壁锯齿状加厚明显，交叉场纹孔多为窗格状，偶尔为松型；管胞的长宽比平均值约为50，气干密度平均为598kg／m3，差异干缩约为1.8；1％NaOH抽出物、乙醚抽出物、纤维素含量较落叶松高，木素含量比落叶松低，其它化学指标与落叶松相近。

The surface density of ZnO nanorods also increase with increasing zinc nitrate hexahydrate concentration.

平均直径会从410 nm增加到3.9 μm，并且，所成长的奈米柱的密度也随会之增加。

The intensity formula shows that the light intensity at any point of a curved surface is not only related to the amplitude at the point, but also related to the included angle between the Poynting vector and the direction of the local differential surface element.

这个推广的定义式表明，曲面上任一点处的光强值都不仅与该处的振幅有关，而且还和该处的时间平均能流密度与面元方向的夹角有关。

2The speed of creating random series used irrational fraction arithmetic was faster than that of multiplicative congruence arithmetic. The correlative value of random series almost was zero.(3) Regarding not harm the images quality as the premise, the speed of FM screening was heightened.

主要结论：利用所建立的条件半色调函数进行图像加网，操作简单、控制精确，使发生阶调不连续处的密度差平均减少到0.01275，明显改善了调幅加网印品的质量；(2)无理数取尾法产生随机数的速度快，数列间几乎没有相关性；(3)在不损失图像质量的前提下，提高了调频加网的输出速度。

After that, the model is validated safety and reliable by using the State Matrix Equation of the Petri network. According to the theory that the State Topological Map of Petri Network and Markov chain are isomorphous, the Markov chain of the model is deduced, by which some function indexes such as marked density of probability, average token-number, and usage of transformation can be calculated.

同时，本文运用Petri网系统的状态矩阵方程的方法对模型进行了可达性验证，经验证该模型是安全可达的，并根据随机Petri网的状态图同构马尔可夫链的原理，获得该模型的马尔可夫链，运用该MC链分析了模型的标记概率密度、位置中的平均标记数以及变迁的利用率等性能指标。

The reactor thermal output is 4 250 MW,and average linear power density is 179.5 W/cm.

反应堆热功率输出为4 250 MW，平均线功率密度为179.5 W/cm。

Great differences between them are found in amplitude, and attributed to the strong background wind in troposphere and steady weak wind in lower stratosphere. Steady diurnal variation of temperature appears above 23 km, and the same variation in pressure is found starting from lower altitude, which together suggest a weak diurnal variation in atmosphere density above 23 km, that approximates a constant at each height.

发现风场振幅的变化与统计平均的结果存在较大差异，这归结于当地冬季对流层内强烈变化而低平流层内相对稳定的风场；温度在23 km以上存在稳定的周日变化，气压在更大的范围内存在与温度类似的周日变化，这使得在23 km以上大气密度的周日变化十分微弱，在各个高度上近似为一个常数。

Methods The expression of MMP-10 and mean microvessel density in 54 specimens were examined by immunohistechemical stain.

方法用免疫组化法检测54例食管癌组织中MMP-10的表达和平均血管密度。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。