日本工业标准_JIS B8247-1999 Formed head for pressure vessel_B 8247: 1999 (1) ?QUV wFx|j=Ot,nMo|?j*qw?&o|?GUYh?FpK?t?lo JIS B 8247 : 1992 xY?|wFt?VQ? B 8247: 1999 (1) ? ? 1 1.
copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有备案/许可证编号:苏ICP备17064731号-1