wafer head self drilling screw是什么意思

wafer head self drilling screw：晶片头自钻螺钉
　　self drilling screw：自钻螺丝；钻尾螺丝；螺钉
　　例句：
　　1.When selecting a self-drilling screw for penetrating through steel studs or otherlight steel projects type 410 stainless is necessary.
　　当为敏锐的完成钢图钉或其他的轻钢计画类型选择一个自我演练的螺丝钉410的时候无瑕疵的是必需的。

　　2.STAINLESS STEEL SELF DRILLING SCREW MILLED POINT
　　不锈钢钻尾螺丝割尾

　　3.The results of the study indicate that the diameter of screw is a major factor tobearing capacity of single self-drilling screw connection.
　　螺钉个数和螺钉间距是影响自攻自钻螺钉群连接件抗剪承载力的主要因素；