日本工业标准_JIS B4121-2009 lndexable hard material inserts(Amendment 1)_B 41212009 1 ?QUV w4x|j=OH 14 t?loj;b?H 12 H 1 wFt,nV|jj?o?F?Yb?VqwZUK?|?j*qw?&o|&A?GUYh?wp|?t?lo| JIS B 4121:1998 xY?|U?VQ?h ?F JIS B 4121 2009? 41 Indexable hard material inserts Amendment 1 JIS B 4121:1998 ?|w?OtYb? 2.;Fw JIS B 0659