查询词典 average density

Objective To observe the effects of pulsed electromagnetic field or/and exercise on the area bone mineral density and volume bone mineral density of rats with osteoporosis induced by tretinoin gastric perfusion.

目的探讨脉冲电磁场或运动对维甲酸形成的骨质疏松模型大鼠的面积骨密度和体积骨密度的影响。

When τ's value was less than 0.1, the HCVAW arc was exhibitive of diffusedshape with lower energy density instinct; and when τ's value was higher than 0.5,the arc was a fine-constricted arc with higher energy density.

在电弧电流密度超过临界值时，电弧自生磁场对电弧产生的收缩作用超过了电弧中各种粒子的扩散作用，HCVAW电弧由此而发生了形态上的转变。

According to spectral characteristics of the HCVAW arc in a body, energy factor which value equals to the ratio of two spectral lines' intensity, was defined.When τ's value was less than 0.1, the HCVAW arc was exhibitive of diffusedshape with lower energy density instinct; and when τ's value was higher than 0.5,the arc was a fine-constricted arc with higher energy density.

从积聚态电弧的谱线空间分布来看，阳极材料为水冷铜板时，自空心阴极端面到阳极工件，氩原子谱线相对辐射强度具有比氩一次离子谱线相对辐射强度更快的减弱趋势，最大辐射强度均出现在距空心阴极端面2mm左右的位置。

Energy density and particle density in high energy heavy-ion collisions are calculated with infinite series expansion method and Gauss-Laguerre formulas in numerical integration separately, and the results of these two methods are compared, the higher terms and linear terms in series expansion are also compared.

分别用无穷级数展开方法和数值积分计算中的高斯拉盖尔求积法对高能重离子碰撞中能量密度和粒子密度数值进行计算，并对结果及级数展开中的高次项和一次项的大小进行了比较。

The results show that the microscopical pore structure of the three dimensional orthogonal woven carbon fabric structure perform is composed of body-centered cubes which arranged periodically at spaces. The net structure and shape of the pores of perform are determined by the size and proration of the fasciculus diameter, which are key factors influencing the gaseous permeability and final density of composites. Once the proration of the fasciculus diameters of different directions is determined, the trend of diversification of the permeability followed by pore rate during CVI process and the density of composites are stated, and the permeability increases with the increase of the fasciculus diameter.

研究结果表明：三维正交结构炭纤维预制体的宏观孔隙结构在空间上可以看成是由呈周期性排列的体心立方"晶胞"构成； X ， Y 和 Z 3个方向纤维束直径大小及比例关系决定三维正交结构炭纤维预制体宏观孔隙网络的结构和形状，也是决定反应气体在孔隙中的比渗透率和复合材料最终致密度的重要因素；当 X ， Y 和 Z 3个方向纤维束直径的比例关系一定时，不同预制体在CVI增密过程中比渗透率随孔隙率变化的趋势相同；复合材料的最终致密度一定；比渗透率随纤维束直径增大而略有增大。

B order to make full use of Ta1, it is essential to improve the investigation to industrial production scale by drawing assistance from high cell density fermentation. Pilot test of tube culture and flask shaking culture were done to get optimized culture conditions. Finally, we reached the goal of high cell density fermentation and high level expression of recombinant human Ta1 E.

在经过试管以及三角摇瓶水平对培养条件进行摸索后，我们成功地实现了该工程菌的高密度发酵，3乙菌液获得湿菌体工4口丁蛋白表达水平与试管水平相当。

METHODS: HPMSCs were isolated from placenta of fetation human by density gradient centrifuge. Following bone marrow heparin anticoagulation, human BMSCs were isolated, purified and passaged by density gradient centrifuge.

采用密度梯度离心法从胎盘中分离、纯化和传代培养人胎盘源性间充质干细胞；骨髓肝素抗凝后，采用密度梯度离心法分离、纯化和传代培养人骨髓基质干细胞。

Bone marrow was obtained from healthy adult donors. METHODS: HPMSCs were isolated from placenta of fetation human by density gradient centrifuge. Following bone marrow heparin anticoagulation, human BMSCs were isolated, purified and passaged by density gradient centrifuge.

采用密度梯度离心法从胎盘中分离、纯化和传代培养人胎盘源性间充质干细胞；骨髓肝素抗凝后，采用密度梯度离心法分离、纯化和传代培养人骨髓基质干细胞。

So the controll of density is the core of produce line the Medium Density Fiberboard.

介绍了它们的各自特点，影响因素及对于各个参数应进行的控制。

Density is a critical process parameter during the Medium Density Fiberboard.

而且密度并不是一个独立的因素，对于它的控制涉及了板坯含水率的控制，铺装工艺的控制，热压工艺的控制等。

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。