周期

In this paper,we study the periods of transversal vibration for a tense symmetric double elastic oscillator.

理论研究与数值模拟的结果都表明：振动的周期随着振幅或紧张程度的增大而减小，紧张程度不断增大时周期存在一个极限值。

The mean, maximum and minimum value of the area of transverse section and the major axis length of ellipse and the maximum centroid displacement can be used to discriminate width of pulse tracing.

长轴长度周期平均值、最大值、最小值，面积周期平均值、最大值、最小值，以及轴心在平行于皮肤表面的最大位移等参数可以作为初步判别脉宽的参数。

It is further divided into ten weekly lessons ("parashiyyot") for the annual cycle, and into thirty-two weekly lessons for the triennial cycle.

这是进一步分为10周的经验教训（" parashiyyot "）的年度周期，到32周的经验教训（" sedarim "）的三年周期。

The Torah also falls, on the basis of the lessons for the Sabbath, into 54 sidrot according to the annual cycle, and into 155 according to the triennial cycle.

的律法也属於基础上的经验教训的安息日，到54 sidrot根据年度周期，并纳入155根据三年周期。

The number "7.13.0.0.0" represent 2 whole cycles of earth, it can calculate tropical year is 365.242 days.

地球回归年公转周期在"7.13.0.0.0"天（玛雅20进制数，倒数第二位为18进制）中有两个完整的周期，计算得到地球回归年为：365.242天。

The paper analyzed the factors that influence the defining of the maintenance cycle of the lubrication system in mining truck engine,and scientifically sensible method to determine the maintenance cycle was put forward.

分析了矿用汽车润滑系统保养周期制定的影响因素，提出了科学合理的制定矿用汽车润滑系统保养周期的方法。

The grinding trace is an approximate round curve overlapped while the swing period of swing-arm is the half or the same of period of turnplate.

当摆臂摆动周期是转盘转动周期的0.5或1倍时，磨削轨迹为重合的一条近似圆弧曲线，该传动比为合理值。

The two-cycle variation in side force per 360° of roll under small bleed momentum is gradually evolved to one-cycle variation under large bleed momentum.

模型上的侧向力随模型滚转从小吹气量下的双周期变化逐渐演化成为大吹气量下的单周期变化，利用该渐变规律可以实现对非对称背涡流场的主动控制，提出了微量吹气扰动控制概念。

The relation between maintenance cycle and unavailability is deduced,and the optimal maintenance cycle ...

推导了继电保护设备的检修周期与其不可用率的关系，以不可用率最低为目标确定了最佳检修周期。

Physics The increase in amplitude of oscillation of an electric or mechanical system exposed to a periodic force whose frequency is equal or very close to the natural undamped frequency of the system.

磁共振：受周期力作用的电动或机械系统的振荡幅度的增加，该周期力的频率等于或非常接近系统固有的不减弱的频率

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。