ISO 12900-2018 硬煤--磨损度的测定 Hard coal - Determination of abrasiveness

This document describes a method for determining the abrasiveness of hard coal.rd edition 2018-11 Hard coal — Determination of abrasiveness Houille — Détermination de l'abrasivité Reference number ISO 12900:2018(E) ？ ISO 2018 ISO 12900:2018(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or