噪声规范曲线 noise criterion curves
纺织机械噪声测试规范 Textile machinery
工业企业噪声测量规范 measurement of noise produced by industrial enterprises
噪声试验规范 Noise test code
正则表达式是使用各种构件构建的复杂模式规范，并且随着模式变得越来越复杂，它看起来就像是调制解调器的线路噪声。
Regular expressions are complex pattern specifications built using building blocks that end up looking more like modem line noise as the pattern gets more complex.
声学。道路交通噪声的表征和测量。一般测量规范。
Acoustics - Characterization and measurement of road traffic noise - General measurement specifications.
结果表明各台址背景噪声水平基本符合数字地震观测技术规范要求。
The result shows that the background noise levels of all stations satisfy basically the normative requirement of the digital remote earthquake observation technique.
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