衰落

Based on the review of the history of programmed instruction, in this paper we discussed the philosophical tropism and theoretical hypotheses on programmed instruction and held that the technological determinism and social benefit had great impact on the generation, development and fading finally.

摘 要：本文在对程序教学的发展历史进行文献综述的基础上，就程序教学的哲学取向和理论假设做了探讨，认为技术决定论和社会效益与程序教学的产生、发展乃至最终的衰落有着重要的影响。

This may become prohibitive for real-time applications such as voice and video in fast-fading situations.

这可能成为高昂的实时应用，如语音和视频在快速衰落的情况。

All of these civilizations disappeared without leaving proof of their existence, and no scholar or sage can name the cause of their decline.

所有的文明消失了，没有留下他们存在过的证明，没有学者或圣贤能确定他们衰落的起因。

Like psychedelia and the 10-minute guitar solo gained prominence.

慢舞曾经是早期摇滚舞曲重要的部分，但60年代以后，因为迷幻剂和10分钟吉他独奏的兴起，而衰落下去。

And I shall have to tell you later that even the processes of putrefaction and decay had been profoundly affected by these changes.

我后面 还要告诉你们，甚至连动植物的衰落和腐烂也都深受这些变化的影响。

LIKE all quintessentially British things, gardening is a pastime that has long been in decline.

像所有典型的英国事物一样，作为消遣娱乐的园艺活动很早之前就在衰落。

This paper focuses on the RAKE receiving technique in UWB communication.

Rake 接收技术是一种在宽带CDMA 系统中广泛使用的抗多径衰落技术。

They may slow the rate of decay a bit, but they're nowhere near reversing it.

他们可能可以稍微减缓衰落的速度，但离恢复原貌还差之千里。

The error bit ratio performance formula for the block precoded OFDM system with zero forcing and squared error receivers in Rayleigh Raying channels is deduced in this paper.

推导了在瑞利衰落信道下的分组预编码正交频分多址调制系统，接收机采用迫零均衡和最小均方误差均衡的系统误码率公式。

The instantaneous SNRof the receiver of STBC over raying fading is illustrated, based on this, the closed impression of STBC's symbol error rate is educed with M-PSK and M-QAM modulation and also presents the numerical results.

给出在瑞利衰落信道下正交空时分组码瞬时接收信噪比的一般表达式，在此基础上推导出正交空时分组码在M-PSK和M-QAM调制下误符号率的闭式表达式，并给出数值分析结果。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。