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
- axiom of projective determinacy
- axiom of projective determinacy (PD)
- axiom of rational behavior
- axiom of reducibility
- axiom of regularity
- axiom of regularity; axiom of foundation
- axiom of replacement
- axiom of restriction
- axiom of separation
- axiom of subsets
- axiom of substitution
- axiom of sum-set
- axiom of syllogism
- axiom of symmetry
- axiom of the empty set
- axiom of the power set
- axiom of the sum set
- axiom of union
- axiom of unordered pair
- axiom schema
- axiom schema of replacement
- axiom schema of separation
- axioms for cohomology
- axioms for generalized cohomology
- axioms for generalized homology