查询词典 cycles

At the same time, the center conditions and bifurcation of limit cycles at the origin of the quintic polynomial system are also investigated.

第二章研究了一类三次多项式系统由细焦点分支出极限环的问题，证明了该系统有12个小振幅极限环，证明过程是符号和代数的，且焦点量的表达式相对简单。

The main two cycles of the Xiangshan volcanic rocks and subsequent subvolcanic rocks have low ε〓 value (-7.46～-9.40), high initial 〓Sr/〓Sr ratio (0.70801～0.71201), old Nd model ages (1.54～1.70Ga) and relatively riched in radiogenic Pb.

相山两旋回火山岩及火山期后的次火山岩具有较低的ε〓值(-7.46～-9.40)、较高的I〓值(0.70801～0.71201)和较古老的Nd模式年龄(1.54～1.70Ga)，且相对富集放射成因铅。

The latter mode includes the Rankine cycle, Brayton cycle, improved and multiplex cycles.

根据研究现状，最后指出了有待进一步研究和解决的诸多问题。

The Kalina cycle which uses ammonia-water mixture as the working-medium, has the characteristics of lower vaporization temperature and non-isothermal heat absorption. Therefore, the Kalina cycle is used in low temperature waste heat recovery based on introduction of operating principle. The primary parameters of Kalina and Rankine cycle are optimized by mean of genetic algorithm respectively, and the net output power of the two cycles is compared on the same condition.

卡林纳循环采用氨水混合物作为工质，具有气化温度低和非等温吸热的特点，因此，在简要介绍其工作原理的基础上将其应用于中低温余热回收，采用遗传算法对卡林纳循环和常规朗肯循环的主要参数进行了优化，在相同的余热条件下，比较了卡林纳循环和常规朗肯循环的净输出功率。

The present system consists of two cycles, organic Rankine cycle for recovering the waste heat in high-temperature exhaust and lubricant and Kalina cycle for recovering the waste heat in low-temperature cooling water.

此系统由用来回收温度较高的发动机排气余热及润滑油余热的有机Rankine循环(Organic Rankine Cycle， ORC)和用来回收温度较低的发动机冷却水余热的Kalina循环耦合而成。

In order to have identical values, the numbers of the oldest bars, from which the recalculation of all bars starts, in cycles both in the indicator and in the indicator code inside the EA should coincide.

为了有相同的价值观，有多少历史最悠久的酒吧，从它重新计算所有酒吧打响后，在这两个周期在指标，并在指标内码环境应不谋而合。

The frequency of a sound is the reciprocal value of the period; it represents the number periods in a second and is measured in hertz or cycles per second.

声音的频率是周期的倒数，它表示的是声音在1秒钟内的周期数，单位是赫兹。

Well-to-do Chinese would have started a discussion as to whether the universe moves in cycles or progresses by a rectilinear motion; or they might have set to work to consider whether the truly virtuous man shows complete self-abnegation, or may, on occasion, consider his own interest.

中国绅士却会探讨宇宙是作圆周运动抑或作直线运动；他们也可能陷入思考，考虑真正的君子是应当处处慎独呢，还是有时也可以考虑个人的利益。

Mixed refrigerant cycles can improve refrigeration efficiency, and are used widely in natural gas liquefaction systems.

混合制冷剂制冷循环可以提高制冷系统的效率，广泛应用在天然气液化领域。

The implication is that given a specific risk level, the expected return of a portfolio should be relative higher in an expansion cycle compared to that of the other various cycles.

而效率前缘在景气扩张期较全循环期呈现往左上方偏移，显示景气扩张期的投资组合，在同一风险下可获得更高的预期报酬。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。