| 1. | This dependency between fossil and living types is well illustrated when we deal with extinct groups .
化石与现存类型之间的这种依赖关系在我们研究绝灭类群时是十分明显的。 |
| 2. | Group - delay characteristic of receivers for television broadcast transmissions
电视广播接收机群时延特性 |
| 3. | Methods of measurement for waveguides - part 3 : variation of group delay
波导管的测量方法.第3部分:群时延的变化 |
| 4. | Differential group delay dg
微分群时延 |
| 5. | Enhancing dgd dynamic range of different formats by using filtering technique
采用滤波技术提高不同码型差分群时延动态范围研究 |
| 6. | Introduction and analysis of methods of measuring the group delay of frequency - translating devices
频率变换器件群时延测量方法的探讨与分析 |
| 7. | Differential group delay measurement of single - mode components and devices by the differential phase shift method
利用微分相移法进行单模元器件和装置的群时延差测量 |
| 8. | The study in kenya found elephants detected both the scents and colours of garments worn by masai tribesman who often come into conflict with the animals when herding cattle
这项在肯亚进行的研究发现，大象能够分辨出马赛族人的气味和衣物的颜色，马赛族人在放牧牛群时，经常与象群发生冲突。 |
| 9. | By new the vector - mixer calibration technique has bees teed in our project , the test results show that vector - mixer slaved measuring absolute group delay of frequency converters successfully
矢量混频器技术已在工程中应用，测试结果表明，矢量混频器技术较好地解决了变换链路绝对群时延的测量。 |
| 10. | 2 . while the frequency of the incident microwave is getting closer to the frequency at which the resonant effect appears , the electric field in the middle of the slot is group delayed
( 2 )当入射波载频接近共振频率时,孔缝中心耦合的电场强度存在群时延现象,群时延现象与共振增强效应同步发生。 |
