理学 计算机硬件电路 释 via hole 过孔 用于连接多层印制电路板内不同层导体的垂直连接孔。又称金属化孔。
计算机硬件 计算机工程制造 释文 via hole 过孔
- quaternary semiconductor compound
- quaternary structure
- quaternary substitution
- Quaternary System
- quaternary system
- quaternary transgression in China
- quaternary tree
- Quaternary volcanism
- quaternion
- quaternion algebra
- quaternion conjugate
- quaternion division algebra
- quaternion division ring
- quaternion elliptic space
- quaternion field
- quaternion function
- quaternion group
- quaternion hyperbolic space
- quaternionic
- quaternionic analysis
- quaternionic automorphism
- quaternionic equation
- quaternionic extension
- quaternionic fiber bundle
- quaternionic Hessian matrix