ISO 4225-1994 Air quality general aspects vocabulary《空气质量 一般方面 词汇 两种语言版》.pdf
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1、IS0 4225 94 m 4851903 O562252 332 I NTE R NAT I O NA L STANDARD NORME I NTE R NAT I O N AL E IS0 4225 Second edition Deuxime dition 199404-0 1 Air quality - General aspects - Vocabulary Qualit de lair - Aspects gnraux - Vocabulaire Reference number Numro de rfrence IS0 4225:1994(E/F) IS0 4225:1994(E
2、/F) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which
3、 a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all m
4、atters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 YO of the member bodies casting a vote. International Standard IS0
5、 4225 was prepared by Technical Committee ISOTTC 146, Air quality, Subcommittee SC 4, General aspects. This second edition cancels and replaces the first edition (IS0 4225:1980), of which it constitutes a technical revision. (P IS0 1994 All rights reserved. Unless otherwise specified, no part of thi
6、s publication may be reproduced or utilized in any form or by any means, electronic or mechanical. including photocopying and microfilm, without permission in writing from the publisher. / Droits de reproduction rserves. Sauf prescription diffrente, aucune partie de cette publication ne peut tre rep
7、roduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de lditeur. International Organization for Standardization Case postale 56 * CH-121 1 Genve 20 - Switzerland Printed in Switzerland / Imprime en
8、 Suisse IS0 4225:1994(E/F) Avant-propos LISO (Organisation internationale de normalisation) est une fdration mondiale dorganismes nationaux de normalisation (comits membres de IISO). Llaboration des Normes internationales est en general con- fie aux comits techniques de IISO. Chaque comit membre int
9、ress par une tude a le droit de faire partie du comit technique cr mainly in the size range less than 200 pm. 3.24 dry adiabatic lapse rate: See 3.53, lapse rate. 3.25 dust: Small solid particles, conventionally taken as those particles below 75pm in diameter, which settle out under their own weight
10、 but which may remain suspended for some time. (See 3.41, NOTE 1 In some languages, other than English, a single term is used for the English terms “dust“ and “grit“, for example, in French, “poussire“. 3.26 effective chimney height: Height used for the purposes of calculating the dispersion of emit
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