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
- externality
- externality of forestry
- externality of grassland
- externalization
- externalizing behavioral problem
- external key
- external law
- external law of composition
- external lightning protection device
- external lock
- external locus of control
- external loop
- external loop airlift reactor
- externally dispersed interferometer
- externally inscribed curve
- externally modulated optical transmitter
- externally prestressed concrete structure
- externally-pulsed
- externally stable set
- externally tangent
- external-magnetic wet permanent drum magnetic separator
- external mold
- external motivation of learning
- external negation
- external network