提出了一种数学模型来描述试验中沟宽的周期性形态变化。
A mathematical model was advanced to describe these changing patterns of rill width.
目的：观察拔毛诱导的小鼠毛发周期中毛囊间表皮lc及DETC的密度及形态变化，探讨二者与毛囊周期的关系。
Objective: To observe the dynamic changes in the density and morphology of Langerhans cells (LC) and dendritic epidermal t cells (DETC) in murine inter-follicular epidermis during hair follicle cycle.
构造活动改变地层的空间形态，同时产生周期性的应力震荡变化。油气作为储存在地层中的流体矿产，在运聚期明显要受到构造活动的影响。
An active tectonic movement changes the space shape of stratum and result in periodic stress concussion, which will influence hydrocarbon migration and accumulation as fluid deposit in stratum.
测试结果显示，覆膜滤料在运行一个周期后，在形态特征、性能特性和强度特性等很多方面都优于不覆膜滤料，新料和旧料间变化相对较小。
The result showed that the microporous membrane fabric had more advantages than the normal one, e. g, less change of characteristics through the 3 months' running.
摘 要：目的：观察神经母细胞瘤细胞在被维甲类化合物诱导分化过程中细胞形态、细胞周期及端粒酶基因表达方面的变化，探讨其作用机理及临床意义。
Objective: The current study was designed to observe and discuss the variation of neuroblastoma cells in morphology, cell cycle and telomerase gene (hTR) expression induced by retinoids.
结果表明，黄体组织的形态结构随所处妊娠的不同阶段而变化，退化黄体细胞数量随周期进程逐渐增多；
The results showed that, the morphological structure of corpus luteum varied at different stages, and the number of degenerative luteal cells gradually increased;
结果表明，黄体组织的形态结构随所处妊娠的不同阶段而变化，退化黄体细胞数量随周期进程逐渐增多；
The results showed that, the morphological structure of corpus luteum varied at different stages, and the number of degenerative luteal cells gradually increased;
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