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1·Four-wave mixing was observed in the active medium of a copper vapor laser.

在铜蒸气激光器的激活介质中观察到四波混频现象。

2·The wave continues to grow as it sweeps back and forth across the active medium.

光波在激活媒质中来回穿过时，将不断得到加强。

3·A heat management mode for cooling the active medium in the second operating phase was discussed also.

对第二工作相冷却工作物质的热管理模型进行了讨论。

4·The electrode structure, metal wall action on the active medium cooling, and the gain distribution have been studied.

文章研究了电极结构，金属腔壁对工作气体的冷却作用和腔内的增益分布。

5·From the comparison of the fiber lengths, the pump power and the gain flatness for same gain of FRA, that DCF have been chosen as the active medium of LRA.

比较在相同增益时的泵浦功率、光纤长度和增益平坦性，从而选择色散补偿光纤作为LRA的增益介质。

6·Furthermore, an effective experimental scheme based on the TDFWM IL structure of LED is proposed for the observation of inter and intra band carrier relaxation rates in the active medium.

进而提出了用发光二极管结构的非相干光时延四波混频测量有源介质带间和带内载流子弛豫速率的有效方案。

7·Thermal effects in the active medium are investigated systematically in this dissertation to improve the working characteristics of lasers, increase output power and improve beam quality.

本文从改善激光器运行特性，提高输出功率和改善光束质量的角度出发对激光介质中的热效应问题进行了的研究。

8·This article has shown that it is necessary to distinguish the eikonal function, effective optical path and geometrical length etc. of active medium while investigating optical resonators.

本文指出，在光学谐振腔的研究中应当区分用程函、有效光程、激活介质的几何长度等物理量。

9·Twenty percent of the users are active in a 15-minute interval (classified as medium users).

20%的用户在15分钟间隔内活动(分类为中用户)。

10·Our test again used the medium-type mail user workload, except that this time, we sent a single message to 50 users on the active server.

我们的测试仍然使用中型的邮件用户工作负载，唯一不同的是我们将一条消息发送给活动服务器的50个用户。