定价： 1957元 / 折扣价： 1664 元

Update #1 was published as notification that this is now a National Standard of Canada This PDF includes Update #1 1. Scope 1.1 This Standard is intended for manufacturers and purchasers of machinery sold in, or exported from, Canada. It is also

定价： 546元 / 折扣价： 465 元

1. Scope This International Standard specifies a method for the measurement of the noise at the position of the operator(s) of a tractor or machine used in agriculture and forestry. The measured noise relates only to the basic machine and applies to se

定价： 546元 / 折扣价： 465 元

Update #2 was published as notification that this is now a National Standard of Canada This PDF includes Update #2 1. Scope 1.1 This Standard is intended as a specification for the certification of products as suitable for installation as roadwa

定价： 410元 / 折扣价： 349 元

Preface This is the third edition of CSA Z107.56, Procedures for the measurement of occupational noise exposure, which is part of the CSA Z107 series of Standards on acoustics and noise control. It supersedes the previous editions published in 1994 a

定价： 501元 / 折扣价： 426 元

CSA Preface This is the first edition of CAN/CSA-ISO 1996-1, Acoustics - Description, measurement and assessment of environmental noise - Part 1: Basic quantities and assessment procedures, which is an adoption without modification of the identically t

定价： 410元 / 折扣价： 349 元