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1)  estrous cycle
性周期
1.
Objective To explore the effect of apigenin on the estrous cycle in normal adult female S-D mice.
目的探索芹菜素对正常雌性大鼠性周期的影响。
2.
To investigate the sex and estrous cycle related difference of neuroprotection induced by preconditioning with 3 nitropropionic acid (3 NPA), hippocampal slices were prepared from male and female mice on different estrous stages during the estrous cycle.
为探讨 3-硝基丙酸 (3- NPA)预处理神经保护作用的性别差异和性周期对预处理效果的影响 ,采用细胞内记录和细胞外记录技术 ,观察不同性别和性周期小鼠海马神经元缺氧时群峰电位波幅 (PSA)和膜特性在 3- NPA预处理前后的变化 ,并采用荧光光谱记录技术检测还原型辅酶 I(NADH)荧光强度。
2)  Sexual cycle
性周期
1.
To improve the rate of fertilization,the productive capacity of BALB/c mouse was studied and the results showed that it was important to characterize the estrus among sexual cycles.
结果表明:性周期动情期的鉴定是提高小鼠受孕率的关键。
2.
The results showed that it was important to charact erize the estrus among sexual cycles, and the mouse fertilization efficiency wer e influenced by light、temperature、air humidity、noise and nourishment.
对C57BL小鼠生殖系统进行了解剖学和细胞学研究 ,结果表明 :性周期发情期的鉴定是提高小鼠受孕率的关键 温度、光照、噪音、湿度及营养等因素对小鼠生殖效率影响较
3.
To improve the rate of fertilization,the anatomy and cytological characters of Balb/c mouse genital system were studied and the results showed that it was important to characterize the estrus among sexual cycles.
结果表明:性周期发情期的鉴定是提高小鼠受孕率的关键。
3)  weekly period
周周期性
4)  periodicity [英][,piəriə'disiti]  [美][,pɪrɪə'dɪsətɪ]
①周期性 ②周波
5)  periodic [英][,pɪəri'ɔdɪk]  [美]['pɪrɪ'ɑdɪk]
周期性
1.
The feasibility of this new operation was proved by the experiments in which two columns and three columns in periodic liquid material exchange were used as operation unit respectively and the system of ethanol-isopropanol(volume ratio of 1) ethylbenzene-para-xylene(volume ratio of 1) were chosen.
提出了一种新型的间歇精馏塔串联系统及其操作方法,分别以两塔液相周期性交换和三塔液相周期性交换为操作单元。
2.
The electricity market is thus described as a nonlinear, nonautonomous, periodic difference system.
并根据电力市场的物理特性,在模型中考虑了电能供需的同时性、市场需求的周期性以及市场中非连续的投标竞价方式,将市场稳定问题转化为一个非线性、非自治的周期差分系统的稳定问题。
6)  quasi-periodicity
准周期性
1.
By using the transfer matrix method,the effects of Braggmirror quasi-periodicity on the photonic crystal defect mode was studied.
利用传输矩阵法研究了Bragg镜的准周期性对光子晶体缺陷模的影响。
2.
It was proposed that the doubly even order magic square transformed image has a quasi-periodicity, of which there is a semi-periodicity.
提出双偶阶幻方变换图像具有准周期性。
补充资料:性周期
性周期
sexual cycle

   雌性哺乳动物自初情期到性功能衰退的生命阶段中,在性行为以及生殖系统结构和功能上的周期性变化。在性周期中,除了卵巢排卵外,生殖器官的其他部分亦有变化,如子宫壁在排卵前后增厚。在排卵时期,动物性欲旺盛,故性周期也叫发情周期或动情周期。雌性灵长类(包括人类)性周期的显著特点是在性周期中,与子宫内膜周期性脱落的同时,子宫出血并从阴道流出。一般28天左右一次,叫月经或月经来潮,因而灵长类的性周期也叫月经周期。
   雌性哺乳动物发情周期的时间,或指上一次发情开始至下一次发情开始,或指上一次排卵至下一次排卵之间的时间间隔。在发情周期中卵巢、子宫与阴道等主要附属性器官的变化见表。
   
   

表:发情周期的主要变化

表:发情周期的主要变化


   性周期的调节机制还不完全明了。一种学说认为,中枢神经系统经一定的时间间隔发出神经冲动,经下丘脑、垂体的体液性调节而发生周期性排卵。另一种学说则认为,下丘脑-垂体-卵巢内分泌途径的反馈作用系统影响周期性的变化。因而,新周期的开始就成为前一周期结束的必然结果,性周期得以周而复始。目前一般接受第二种学说的较多。
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