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| Date: | Thu, 14 Dec 2006 20:45:07 -0600 |
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Dear all,
Today's unsure terms is coming. Please give us your hand. Thank you so much!
5 Fabrication Process for Interconnection Structures 互连结构制造工艺
51 Mechnical Processes 机械加工
Helix Angle 螺旋角 51.0601
The angle of the spiral generated by the flute of a drill with respect to the axis of the drill.
钻头排屑槽相对于钻头轴向形成的螺旋角。
Margin Width (Drill) 刃带宽 (钻头) 51.0740
The thickness of the cylindrical portion of a drill land that is perpendicular to the leading edge.
钻头圆柱部分的刀刃口到钻头实体部分的垂直距离。
Land Width Angle (Drill) 刃带宽度角（钻头） 51.1223
The angle between the leading edge and the heel of a drill land as measured at the drill axis.
从钻头刃带的前缘到后棱的角，在钻头轴处测量。
Compound Die Set 复合模组合 51.1633
A set consisting of a punch and matching die used to punch holes, details or the outlines of panels and/or printed wiring boards.
由冲模和配合模组成的一套模具，用于冲孔、冲在制板和/或印制线路板的局部或整体轮廓。
Drill Bit 钻头 51.1702
A rod with spiral flutes (grooves) and an obtuse angled point with sharpened cutting edges used to make holes by rotary action.
一种带有螺旋排屑槽的杆，头部为带有刃口的钝角尖，通过旋转运动制作孔。
End Mill 端铣刀 51.1719
A rod with straight or spiral flutes (grooves) sharpened as a cutting surface(s) and a flat or shaped end with cutting teeth, used for surface or side milling by rotary action.
一种带有垂直或螺旋状凹槽的滚筒，被削尖成锋利的表面和平的或某种形状的端部，带有锋利的牙齿，通过旋转运动用作表面或侧面研磨。
Entry/Backup Material 引入/支持材料 51.1720
A material which when placed on the top (entry) and/or bottom (backup) of a stack of printed boards being drilled or routed, supports the edges of drilled holes or routed profile such that the presence of burrs is minimized.
在钻孔或布板时，放置于一叠印制板的顶部（引入）和/或底部（支持），支撑钻孔边缘或切板侧面，以便将毛刺减少到最低的材料。
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