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- four mirror filter 四反射镜滤光片
- Quadrature Mirror Filter banks is widely used in multirate system.It can divid input signal into several subband signals. 摘要:正交镜像滤波器组被广范的使用在复速率系统,它能将输入讯号分解成数个相等频宽的次频带讯号。
- Filtering Characteristics of Fiber Loop Mirror Filter Composed of Multi-Stage High Birefringent Fibers[J]. 引用该论文 周广;赵启大;刘艳格;开桂云;董孝义.
- A new type of Nasmyth system which consists of four mirrors is put forward. 提出一个由4个镜面组成的新的Nasmyth系统;在约10的视场范围内像斑小于爱里斑;达到衍射极限.
- Current mirror filters with improved leapfrog-type 改进型跳耦结构电流镜滤波器
- It is clear to all of us that two plus two is four. 二加二等于四对我们大家都很清楚。
- He wove four plots together into a novel. 他把四条情节编成一部小说。
- We have tea at four o'clock in the afternoon. 我们在下午四点钟喝茶。
- The town boasts four swimming pools. 这座城镇以拥有四个游泳池而自豪。
- Our football team won by four goals to nil. 我们的足球队以四比零取胜。
- He lay back and hit the ball for four. 他向后弯身击中球,得了4分。
- I was clean broke in less than four days. 不到四天我就一个钱也没有了。
- I'll look out for you at about four. 我4点钟左右找你。
- He showed us four case studies of disturbed girls. 他给我们看了4位精神失常姑娘的病历。
- My house is four miles distance from the sea. 我家离海四英里。
- Our team beat them hollow by four clear goals. 我们队以净胜4分彻底击败了他们。
- The leap year comes around once in four years. 每四年有一个闰年。
- The soldiers counted off from the left by four. 士兵们从左起四个一组大声报数。
- He wooed four girls before finally marrying one. 他在结婚之前曾向四个姑娘求过婚。
- Four avenues radiate from the square. 四条林荫大道从那广场向四方延伸。