Noise test code for foundry machines and equipment 铸造机器和设备的噪音试验规程
2.
Liquid pumps and pump units - noise test code - grade 2 and grade 3 of accuracy 液体泵和泵装置.噪音试验规程. 2级或3级精确度
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Liquid pumps and pump units - noise test code - grade 2 and 3 of accuracy ; german version en 12639 : 2000 液体泵和泵部件.噪音试验规程.精确性2级和3级
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2 acoustics - noise test code for compressors and vacuum pumps - engineering method grade 2 iso 2151 : 2004 ; german version en iso 2151 : 2004 声学.压缩机和真空泵用噪音试验规程.工程法
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Pumps - rotodynamic pumps - circulation pumps having a rated power input not exceeding 200 w for heating installations and domestic hot water installations - noise test code vibro - acoustics for measuring structure and fluid - borne noise 泵.旋转动力泵.家用热水置装和供热装置用的额定功率输入不超过200w的循环泵.测量结构和流体导声的噪音试验编码声振捣
