[行业标准] QB 1648-1992 聚乙烯着色母料 色母料企标
P:2007-04-03 15:44:02
1
求助如题的标准内容,谢谢!
IPC - Institute of Printed Circuit印刷电路协会 (0) 投诉
P:2007-04-04 13:15:45
2
laminated aluminium-polyethylene sheath - 铝-聚乙烯粘接护套 (0) 投诉
P:2007-04-04 15:40:04
3
high impedance cable - 高阻抗电缆 (0) 投诉
3