常見例句19Is there a process to prehead PCB before potting black poly? 19 是否有密封黑色多晶硅之前預(yù)熱印刷電路板的流程?19 Is there a process to prehead PCB before potting black poly? 在融化黑塑之前是否有預(yù)熱PCB的處理？scaffolded prehead 有支架的前頭部 返回 prehead