Measurement of airborne noise emitted by machines ; enveloping surface method ; machine sets in hydroelectric power stations and water pumping plants 机器空气噪声的测量.空气噪声测量.包络面法.水力发电
Industrial fans - determination of fan sound power levels under standardized laboratory conditions - part 3 : enveloping surface methods 工业用风扇.标准化实验室条件下风扇声功率级的测定.第3部分:包络面法
Measurement of airborne noise emitted by machines ; enveloping surface and reverberation room method ; industrial sewing machines and industrial sewing units 机器空气噪声的测量.包络面法和混响室测量法.工业缝
Measurement of airborne noise emitted by machines ; enveloping surface method ; woodworking machines ; double edging circular sawing machines for rough cutting 机器空气噪声的测量.包络面法.木工机床.粗切割用双刃
Reciprocating internal combustion engine driven current generating sets . part 10 : measurement of airbone noise by the enveloping surface method 往复式内燃机驱动的电流发电机组.第10部分:包络面法测量空气中噪声
Measurement of airborne noise emitted by machines ; enveloping surface method ; woodworking machines ; double blade stroke circular sawing machines for cross cutting 机器空气噪声的测量.包络面法.木工机床.锯片双向行程
Measurement of noise emitted by machines ; airborne noise measurement , enveloping surface method ; woodworking machines ; special specifications for double end shaping machines 机器空气噪声的测量.空气噪声测量.包络面法.木工机床
Measurement of noise emitted by machines ; airborne noise measurement , enveloping surface method ; woodworking machines ; special specifications for two - side and multi - side planing and milling machine 机器空气噪声的测量.空气噪声测量.包络面法.木工机床
Measurement of noise emitted by machines ; airborne noise measurement , enveloping surface method ; woodworking machines ; special specifications for final trimming machines and edge lipping and banding machines 机器空气噪声的测量.空气噪声测量.包络面法.木工机床
