查询词典 periodic

While the primary has not atmosphere like Luna, it is the gravitational effect that causes the long periodic variation with large amplitude in eccentricity and ends the lifetime with decreasing pericentric distance.

若中心天体无大气，这种机制就成为制约轨道寿命的最主要因素。

But the black dealers in Beijing's are also perilously conspicuous, and their numbers have been greatly reduced by periodic clampdowns.

但是，在北京的风月场所，黑人毒贩绝对屡见不鲜。他们的数量，也受到定期的严打影响而大大减少。

The periportal red hyaline globules seen here with periodic acid-Schiff stain are characteristic for alpha-1-antitrypsin deficiency (a person with homozygous pi-ZZ genotype) The globules are intrahepatic collections of alpha-1-antitrypsin that is not being excreted from the hepatocytes .

1-抗胰蛋白酶缺乏症可见典型的病理变化是经 PAS 染色，可见肝细胞内有圆形红染半透明的玻璃样小滴。小滴是肝内α1-抗胰蛋白酶聚集不能被肝细胞排泄而形成的。

The periportal red hyaline globules seen here with periodic acid-Schiff stain are characteristic for alpha-1-antitrypsin deficiency (a person with homozygous pi-ZZ genotype).

过碘酸-雪夫染色时，门脉周围的红色玻璃样小球是α-1-抗胰蛋白酶缺乏症（pi-ZZ纯合子基因型患者）的特征表现。

By use of both analytical method and numerical meth od,the dynamic response of the systems subjected to periodic perturbing excitati on is studied.

通过数值模拟，研究了系统在周期激励下的动力响应问题。

A numeric method evaluating stability degree of periodic solution based on perturbing response data is introduced by the aid of the concept of dynamic systems or flows.

从动力系统流的概念出发，给出了系统稳态周期解稳定度的数值计算方法。

Under appropriate conditions the existence and the continuous dependence of its homoclinic orbits and periodic orbits on the perturbing small function are obtained.

在一定条件下，得到了同宿轨与周期轨的存在性，即这一类系统在这类小参数函数扰动下是结构不变的。

The 400-meters dash belongs to ultimate periodic games and is regarded as a short-distance run which can be divided into 3 periods—the period of acceleration, period of remaining maximum speed and the period of attenuation. The 400-meters dash follows the statistic rules which can be reflected from the following stage: starting the race, accelerating, reaching the maximum speed and gradually attenuating. In fact, it reflects the process that energy is provided. It is a changing process of energy providing—from phosphagen system,glycolysis system to aerobic oxidization system.

400m跑属于极限强度的周期性运动，被视为一项以速度为主的体能类短跑项目，其全程速度的变化一般可分为三个阶段，即加速阶段、最高速度保持阶段和速度衰减阶段。400m跑从起跑加速到获得最大速度后又逐渐降低的统计学规律，实质上反应了能量供应方式从磷酸原系统、糖酵解系统到有氧氧化系统的转变过程。

This paper proposes a new method to get time solutions of periodic orbits and to determine their stability for piecewise linear dynamic systems.

摘要该文提出了分段线性动态系统周期轨道的时域法求解及稳定性判断的新方法。

Three analytical solutions are given including the wet front analysis solution of double medium soil column,the analytical expression of piezometric tube water head and saturation for steady state and the analysis solution of seepage in unconfined aquifer with a periodic boundary condition.

推导了双介质土柱表层水入渗的下渗锋面解析表达式、稳定状态时测压管水头分布与饱和度分布的解析表达式，并给出了有周期性边界条件的有限潜水层内渗流自由面的解析表达式。

And charge them to my credit card?

可以把戏票钱记在我的信用卡上吗？

Open MR scanner with an optical tracking system guidance and monitoring lumbar disc discography is feasible and safety.

开放式MR结合光学导引系统用于引导椎间盘造影术是可行的、安全的。