光周期的 meaning in English

photoperiodic(al)

With rapid advances in femtosecond pulsed laser techniques , ultrashort few - cycle , even single - cycle pulses can be produced in laboratory
随着飞秒脉冲激光技术的迅速发展，实验室已经能够产生几个光周期和接近一个光周期的超短脉冲。
For ultrashort few - cycle pulses , the group velocity dispersion should be considered , whose influence depends on the parameters of the beam and the material
对于几个光周期的超短脉冲，除透镜色差外，还应当考虑群速度色散，且其影响依赖于透镜材料和光束参数。
To see whether it was the rapidity with which the changes were made that hastened the demise of the old mice , the researchers repeated the experiment but either delayed or advanced the light part of the cycle every four days
为了探求老龄鼠的加速死亡是否同光周期的变化速度有关，研究人员进行了重复试验，但是光周期提前或延迟的频率改为4天一次。