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
- proportional navigation
- proportional numbers
- proportional odds model
- proportional odds regression model
- proportional part
- proportional plus integral plus derivative control
- proportional plus integral plus differential control
- proportional-plus-integral-plus-differential control
- proportional price rule
- proportional profile
- proportional region
- proportional regulator
- proportional regulatory systems
- proportional relation
- proportional relations among agriculture,light industry and heavy industry
- proportional relations among primary industry,secondary industry and tertiary industry
- proportional representation
- proportional sampling
- proportional selection
- proportional sequence
- proportional stratified sampling
- proportional subclass number
- proportional trapping
- proportional valve
- proportional variable