您要查找的是不是：
- They then placed a polarizing filter over a ball-rolling beetle to turn its light through 90o. 然后他们在一只滚动球的甲虫上放置一偏振片将光转向90o角。
- With no liquid crystal between the polarizing filters, light passing through the first filter would be blocked by the second (crossed) polarizer. 没有液晶之间的偏振滤镜，光线穿过的第一个过滤器将被封锁，由第二（跨过）偏振片。
- The two systems of government are polar opposites. 这两种政体正好相反。
- Today I went to a market for photography equipments, bought a belt, a polarize filter and a bottle kit. 今天去了摄影器材城，买了条腰带，一个偏正光镜头，还有一个水壶套。
- Unsafe filters include color film, some non-silver black and white film, medical x-ray films with images on them, smoked glass, photographic neutral density filters and polarizing filters. 任何彩色负片、不含银的黑白负片、被烟熏黑的或用墨汁涂黑玻璃片、太阳眼镜、拍摄用中性减光滤镜、偏振镜、磁盘、光盘等，都是不安全的，肉眼看不见的光线（比如红外线）可能大量穿透这些物品，长时间观看会对眼睛造成很大伤害，因此请不要使用这些替代品进行观日。专业的日食观测镜请到专业可信赖的机构购买。
- To avoid the target effect in the sidelobe canceller,a method using adaptive polarization filter is proposed to suppress the target portion in the auxiliary antenna. 为了消除旁瓣对消器中目标效应的影响,文中提出了辅助天线自适应极化滤波抑制目标信号的方法。
- And the polarization filter is used as an effective method to separate the wave field.This paper improves the polarization filter based on SVD and gets a better and stable filter. 本文通过奇异值方法对原有特征值构建的极化滤波器进行了改进，得到了效果更好的极化滤波器。
- To avoid the target effect in the sidelobe canceller, a method using adaptive polarization filter is proposed to suppress the target portion in the auxiliary antenna. 为了消除旁瓣对消器中目标效应的影响，文中提出了辅助天线自适应极化滤波抑制目标信号的方法。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- You need to filter the drinking water. 你需要把饮用水过滤。
- The Photographic Performance of a Circular Polarizing Filter Used Inversely 圆偏振滤光镜反向使用时的摄影性能
- A filter traps dust from the air. 过滤网可存住空气中的尘埃。
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- The scheme of multi-wavelength output based on the gratings is proposed, which could be used as a multi-wavelength polarization filter in the density wavelength division multiplexed (DWDM) system. 基于这种光栅的多波长输出特性，我们提出了将它应用于密集波分复用系统中，用作多长偏振滤波器的方案。
- 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。
- X. Mao, Y. Liu. Null phase-shift polarization filtering for high frequency radar, IEEE trans. Aerospace and Electronic Systems, 2007.7. 毛兴鹏;刘永坦;邓维波.;频域零相移多凹口极化滤波;电子学报;录用
- Located or found in one of the Polar Regions. 环极的，围绕极地的位于或发现于一个极地区域中的
- I took this picture with a red filter. 这张照片我是用红色滤光镜拍摄的。
- In spite of vigilance a polar bear escape from the zoo. 尽管警戒很严，北极熊还是逃出了动物园。
