日本工业标准_JIS B4213-2009 Tapered end mills for trapeziform runner with parallel shanks(Amendment 1)_B 42132009 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 4213:1996 xY?|U?VQ?h ?F JIS B 4213 2009?F 41 Tapered end mills for trapeziform runner with parallel shanks Amendment 1 JIS B 4213:1996 ?|w?OtYb? 1.&;c?w?w;Fw JIS B 0021