您要查找的是不是：
- self filtering aperture 自动滤光孔
- Focusing the laser beam into a 9 mm long BBO crystal, the second harmonic of 1. 2 W was generated with conversion efficiency of 13%. When the filtering aperture was removed, the conversion efficiency fell down to 8%. 将这一光束聚焦到长9mm的BBO晶体中;获得了1.;2W的倍频光;其转换效率为13%25;当移去滤波小孔后;所产生的倍频效率下降到8%25。
- I do not like to go to the movies by my self. 我不喜欢自己一个人看电影。
- I my self is going to make a sandwich. 我要亲手做个三明治。
- He was a wreck of his former self. 他身体坏得不成样子，已兴从前判若两人。
- Knowledge of self increases as one gets older. 随着年岁的增长，人们的自我认识也不断加深。
- You need to filter the drinking water. 你需要把饮用水过滤。
- He's not looking like his old self lately. 他最近看起来不像以前那样。
- He is my best friend, my second self, as it were. 他是我最好的朋友，或者说，是第二个我。
- A filter traps dust from the air. 过滤网可存住空气中的尘埃。
- He never has any thought of self. 他从不考虑个人得失。
- Filtering the water removed some of its impurities. 把水过滤一下除去了一些杂质。
- He is now out of all conceit with his former self. 他现在全盘否定了他原来的自己。
- New ideas are slowly filtering into people's minds. 新思想逐渐深入人心。
- The news of the defeat started to filter through. 战败的消息开始传出来。
- It won't take long to filter the coffee. 用不了多少时间就可以把咖啡过滤好。
- I took this picture with a red filter. 这张照片我是用红色滤光镜拍摄的。
- We usually clear the water with a filter. 我们通常用过滤器使水净化。
- Put the coffee in the filter and let the water run through. 把咖啡倒入滤器里让水流过。
- Can you show us how to use the self - timer ? 能告诉我如何使用自动装置吗?
