principal drawback

英 [ˈprɪnsəpl ˈdrɔːbæk]

美 [ˈprɪnsəpl ˈdrɔːbæk]

【经】主要的退税退款，主要的缺点弊端

The principal drawback of the OFDM systems is that the Peak-to-Average envelope power Ratio ( PAR) of its signals may be very high. A high PAR may cause many problems in system design.
OFDM的一个主要缺点是峰均功率比特别高，而高的峰均比会对系统的设计带来很多问题。
The principal drawback of LR parsers is that it needs too much time to construct a LR parsing table for a large scale grammer. This thesis discusses a few optimized methods to decrease the time of making SLR ( 1) parsing table.
构造大规模文法的LR分析表是非常耗时的，本文对SLR（1）分析表进行讨论，给出了在构造SLR（1）分析表过程中的几种优化方法。
Multi-input multi-output orthogonal frequency division multiplexing ( MIMO-OFDM) is one of the critical technologies of next generation high rate communication systems. High peak-to-average power ratio ( PAPR) of the transmitted signal is a principal drawback of the MIMO-OFDM.
多输入多输出正交频分复用（MIMO-OFDM）系统已成为新一代高速通信系统研究中的热点，而系统所产生的高峰均比（PAPR）信号是限制MIMO-OFDM技术实用化的主要障碍。