基本解释頭部前躰同根派生 prehead相关词英汉例句19Is there a process to prehead PCB before potting black poly? 19 是否有密封黑色多晶矽之前預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熱PCB的処理？scaffolded prehead 有支架的前頭部prehead更多例句