The chromatin of sertoli cell condensed tightly and formed some low electron density areas , nuclear membrane dissolved , the intercellular junction dilated 支持细胞核染色质凝聚程度增加并出现不规则低电子密度区;核膜溶解,细胞间连接进一步拉开。
We can get electron density with the calculated phase and some common model formula ( such as sphere and cone ) in the wake of hypervelocity projectiles 由计算出的相位并根据弹道靶尾迹的一些常用模型(包括圆球体、钝锥体等)公式,把相位转化为尾迹的电子密度。
The theoretical calculations and the experiments suggest that , double pre - ionization has an obvious advantage for increasing the initial electron density between the main electrodes 理论计算与实验表明,双预电离在提高主电极间初始电子密度方面存在着明显的优越性。
The different types of tumor cells were distinguishable by the size of the secretory granules , the electron density and the intracellular organelles which they contained 肿瘤细胞不同型的区别在于:细胞所含分泌颗粒的大小与其电子密度,以及他们所含的内在微细构造之差异。
Microwave interferometer is used to the measurement of electron density in the wake of hypervelocity projectiles . this is important to the development of aerospace and national defence 将微波干涉仪系统用于测量弹道靶尾迹的电子密度,这对航天、国防等事业发展都有着重要的意义。