理学 计算机硬件电路 释 feed-through;pin-through-hole 通孔 穿透印制电路板所有层的过孔。把引脚插入通孔并在反面焊盘上焊牢，可将元器件固定安装在印制板上。
计算机硬件 计算机工程制造 释文 feed-through, pin-through-hole 通孔
- projection
- projection angle
- projection band
- projection chain map
- projection chart
- projection-complete subspace
- projection cone
- projection constant
- projection correlation
- projection difference
- projection-difference method
- projection display equipment
- projection drawing
- projection effect
- projection estimate
- projection formula
- projection function
- projection functor
- projection-grid method
- projection identification method for the characteristic model
- projection image
- projection instrument
- projectionist
- projection iteration
- projection iterative method