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- By using four level rate equation ,the effect of Nd:YVO 4 length and KTP length on the laser output power is calculated for LD pumped green lasers. The optimization results are given. Theoretical analysis agrees quite well with the experimental results. 利用四能级激光系统的速率方程 ,对激光二极管 (LD)纵向泵浦Nd :YVO4 /KTP腔内倍频绿光激光器激活介质和倍频晶体的长度对输出激光功率的影响进行了理论计算 ,给出了参数优化结果 ,分析了它的工作特性 ,得到与理论计算符合较好的实验结果。
- I'd like a room on the upper level. 我想要楼上的房间。
- We need a mechanical digger to level the ground. 我们需要一台挖掘机来平整土地。
- I hope you'll be on the level with me. 我希望你对我坦率布公。
- She needs to win this point to level the score. 她要赢得这一分才能将比分扳平。
- Keep a level head and phone the Fire Department. 保持冷静,打电话给消防署。
- A football field should be level. 足球场地应该平坦。
- The rising level of crime is a sign of the times. 犯罪率增高是这一时代的特徵。
- Maintain scrap rate at an acceptable level. 保持废品率在一个合理的水平。
- I have told the whole story on the level. 我已经诚实地把整个事情经过讲出来了。
- Find level ground for the picnic table. 找一处平坦的地面放野餐的餐桌。
- This mountain is 1,400 meters above sea level. 这座山海拔1,400米。
- He has a level head in emergencies. 他在危急关头能镇定自若。
- If the table top isn't level, things will roll off. 如果桌面不平,东西就会滚下来。
- The level of inflation has gone beyond 8%. 通货膨胀率已经超过了8%。
- Add one level (ie not heaped) tablespoon of sugar. 加一平餐匙糖。
- How would you rate your level of play? 你如何评价你的表现?
- The level of formality determine the precise mode of expression. 不同的礼节程度决定所需的确切表达方式。
- Our effort is gear to a higher level of production. 我们调整力量将生产推向更高的水平。
- What are your set books for English A Level? 你们参加高级程度英语考试要读哪些必修课本?