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- A form of frequency modulation in which the carrier frequency is shifted between a mark frequency and a space frequency in response to the impressed intelligence signal ( frequency-shift keying ). 频率调制的一种方式,其中载波频率在标志频率和场频率之间移动,以响应外加的情报(数据)信号。
- The MTF of the same lens in the different space frequency is measured, the results agree well with the practical results. 对同一双胶合透镜在不同空间频率下的MTF值进行了测量，所得结果与实际值基本吻合。
- Objective To explore the curative effects of picture visual evoked potential(PVEP) space frequency stimulation therapy on amblyopia. 目的观察图像视觉诱发电位(PVEP)自率空间频率眼、脑联合训练疗法治疗儿童弱视的疗效。
- According to optical transfer function, degree of modulation and apperceive degree of space frequency vision vs object image, TIFF grayscale scenograph is made. 根据光学传递函数、调制度和空间频率视觉及对物象的感知程度，制作TIFF格式透视灰度图。
- In this paper, two fractionally-spaced space frequency equalization schemes for the downlink of broadband single-carrier multi-user MIMO-CDMA system are proposed. 该文提出了两种适用于宽带单载波多用户MIMO-CDMA系统下行链路的分数间隔空频均衡接收方案，并进行了理论推导。
- G. can be attained, and that in order to enhance S.S.G. for a given saturation efficiency, the changing rate of grating space frequency should be chosen properly. 在保证一定的饱和抽取效率情况下，为了提高小信号增益，应适当地选取光栅的空间频率变化率。
- Compared with the conventional frequency domain equalization schemes, the proposed fractionally-spaced space frequency equalization ones have better performance with low complexity. 仿真结果表明，这两种分数间隔空频均衡接收方案都比传统的频域均衡接收方案在性能上有很大的提高，并且复杂度也比较低。
- space frequency transmit diversity(SFTD) 空频发射分集
- He vainly tried to mark the defacing stain out. 他试图除去有损外观的污迹，但没有成功。
- Her school work isn't quite up to the mark. 她的功课不大符合要求。
- Tell that joker to stop using my parking space. 叫那个家伙不要占用我的停车场。
- That was just a lot of hot air what Mark said. 马克所说的不过是一大堆空话。
- War has left its mark on the country. 战争给该国留下了不可磨灭的痕迹。
- The public scandal left a black mark on his career. 这一尽人皆知的丑闻给他的事业留下了污点。
- There is plenty of space here to move about. 这里有很大的活动空间。
- How much do you know about the works of Mark Twin. 马克。吐温写的作品你知道多少？
- Happy anniversary, Helen and Mark! 海伦、马克，祝你们结婚周年快乐！
- We're a bit cramped for space in this attic. 在这间阁楼里我们有点活动不开。
- Mark and Barbara are going together now. 马克与巴巴拉现在正在谈恋爱。
- There isn't much space left for your luggage. 剩下的地方不太够你放行李的。
