Is PTH and small via hole wall quality checked by cross-section and followed by a closed loop corrective action?
是否通过切片检验pth与小导通孔孔壁状况，并有相应的改善对策跟踪？
Using a 1/16" drill bit, drill a hole in the middle of the cross section tube above. This will allow gas to escape during welding."
使用1 / 16“钻头，钻一个孔在上面管中间的横截面。这将使天然气逃脱焊接过程。
The presence of primary hole air flows remarkably squeezes the recirculation zone, resulting in a elliptic-like cross section, with the long axis is longer than the short one up to 1.6 times.
发现真实结构燃烧室内的回流区不再是轴对称，主燃孔和二次气流的存在使回流区明显被压扁（最扁处的长轴约为短轴的1.6倍）；
Pressure and velocity fields of spatial cross section on an aircraft model with strake wing and double vertical tails were measured using a seven hole probe.
采用七孔探针对一种边条翼双垂尾布局的飞机模型进行了空间压力场和速度场的测量。
A long-pulse laser, whose energy density can cause the liquid mass transferred, can get a greater ablation ratio and a hole with larger cross section.
能量密度达到造成液态质量迁移条件的长脉冲激光，可获得较大的烧蚀率和截面积较大的通孔。
The cross section shapes of the pits are same with that of the lock hole of the intramedullary nail, which are roundness or ellipse.
凹坑的横截面形状和髓内针锁孔的横截面形状相同，横截面形状是圆形或者是椭圆形。
The punch has a length greater than a cross-section of the part such that further advancement of the punch through the part punches an exit hole in the part opposite the entry hole.
该冲头具有比零件的截面更大的长度，以便冲头穿过零件的进一步行进在零件内冲压出与入口孔相对的出口孔。
The punch has a length greater than a cross-section of the part such that further advancement of the punch through the part punches an exit hole in the part opposite the entry hole.
该冲头具有比零件的截面更大的长度，以便冲头穿过零件的进一步行进在零件内冲压出与入口孔相对的出口孔。
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