准周期的

The results show that both VIMT by ASM and summer rainfall in China exhibit obvious biennial rhythms as revealed by time coefficient of the leading EOF mode.

分析结果表明，亚洲夏季风水汽输送和中国夏季降水的异常主模态呈现显著的准两年变化周期。

Your menstrual cycle may not be permitted to do so will lead to the situation.

可能你的月经周期不是很准所以会导致这样的状况。

Objective To evaluate the effects of 308 nm monochromatic excimer light on cell apoptosis, cycle of and KIT expression in human melanocytes. Methods Melanocytes were obtained from circumcised prepuce, and subjected to primary culture.

目的 探讨308 nm单频准分子光对体外培养的人黑素细胞凋亡、细胞周期和KIT蛋白表达的影响。

If we introduce the aperiodic or periodic reversal of the nonlinear optical coefficient into the waveguides, the CSHG conversion efficiency can be improved greatly, the configuration also has been called quasi-phase matched CSHG. Several research work in this filed has been carried out.

如果引入二阶非线性系数的周期极化反转，即考虑到准相位匹配的情况，切伦科夫倍频效率将会得到极大的提高，可以将之称为准相位切伦科夫倍频。

The wavelength tenability of QPM-OPOs has been theoretically analyzed based on the Sellmeier equation of periodically poled crystals and the QPM theory.

基于周期极化晶体的Sellmeier方程和准相位匹配理论，对准相位匹配光参变振荡器的调谐特性进行了理论分析。

In reality, each cycle at a given temperature does not occur at exactly the same position in the fractionating column; theoretical plate is thus a concept rather than an accurate description.

实际上，一定温度下的每一周期并不是在分馏柱内的同一位置进行的，因而，理论塔板只是一个概念而不是精准描述。

A new method of analyzing three waves interaction in nonlinear periodically poled crystals (PP-crystals) on the theorem of quasi-phase-matching, called the vector superposing method is presented.

从准相位匹配的基本原理出发，提出了一种研究周期极化介质中二阶非线性的三波互作用现象的分析方法－矢量叠加法。

Based on the periodic mean control,a quasi double channel control scheme was proposed according to the characters of rolling projectile,for the two-dimension trajectory correction fuze with crossed canard.

根据旋转弹体自身的特性，针对十字舵型二维弹道修正引信，提出了一种基于周期平均控制力的准双通道控制方案。

The calculation of the model shown that the laser pulses started when the current pulse had disappeared about 2-3 μs, and its duration time is between 1-5 μs. Furthermore, it can be predicted that the continuous or quasi-continuous laser pulse will be obtained under the proper excited pulse duration.

具体的模拟计算显示，激光脉冲出现在放电结束后2-3μs，持续时间在微秒量级；并进一步表明如果选择合适的激发周期，有望实现连续或准连续激光输出。

The energy minimisation method used here is different from that usually taken by other authors in some respects.

本文用计算机制作的模拟Ni_(64)B_(36)非晶态合金的结构模型作为初始位形，分别在自由边界、固定边界、周期边界和准动态平衡边界条件下，用不同于以往的松弛方法进行了能量极小化计算。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。