包面 meaning in English

hüllflche enveloping surface

Measurement of airborne noise emitted by machines ; enveloping surface method ; cranes
机器噪音测量.气载噪声测量.包面法.起重机
Measurement of noise emitted by machines ; airborne noise measurement , enveloping surface method ; test report test record form for enveloping surface method
机器发出噪声的测量.空气中噪声测量.包面法.包面法试
Measurement of noise emitted by machines ; airborne noise measurement , enveloping surface method ; woodworking machines ; special specifications for multistage edge lipping and banding machines
机器空气噪声的测量.空气噪声测量.包面法.木工机床