对话式阅读教学的基本形式及实施策略。
Lastly, the fundamental mode loss of a special kind of depressed-index core PCF is analyzed.最后,本文又对一种低折射率芯光子晶体光纤基模束缚损耗特性进行了分析。
The ring output spot of the fundamental mode is obtained from a high gain TEA CO2 laser by experiment.通过实验在高增益的TEA CO_2激光器中,得到了基模环形光斑输出。