Tiny shops may not require a lot of overhead, but at some point-say, a few million dollars in revenue-the relativelevel of overhead spikes, crimping margins.
小型商店也许不需要很高的开支，但是在有些情况下，几百万美元的收入，一定程度的支出暴涨会挤压利润。
2
From the point of view of relativelevel, this paper proposes a novel approach for the multilevel compression in Walsh code-division multiplexing digital communication.
本文从相对电平的观点出发，提出了一种沃尔什码分多路信号多电平压缩的新方法。
3
The wave form and the spectrum of impact force as well as the variation in sound exposure level (SEL) at a fixed point were measured which representing the relative changes of the ringing noise.