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Number of entries (Data is updated on a monthly basis): 82592
GB/T 6881.3-2002
声学 声压法测定噪声源声功率级 混响场中小型可移动声源工程法 第2部分:专用混响测试室法
Acoustics--Determination of sound power levels of noise sources-using sound pressure--Engineering methods for small,movable sources in reverberant fields--Part 2:Methods for special reverberation test rooms
GB/T 8461-2003
Textile machineryand accessories--Cone sectional warping machines--Maximum usable width
Number of entries (Data is updated on a monthly basis): 82592