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
- nitrogen tetroxide
- nitrogen trichloride
- nitrogen trioxide
- nitrogen use efficiency
- nitrogen-vacancy center
- nitrogen ylide
- nitroglycerin
- nitroglycerine
- nitroglycerin transdermal patches
- nitro ligand
- nitrolime
- nitrolmagnesite
- nitrometer
- nitromethane
- nitrone
- nitro-oxidizers
- nitrophile
- nitrophosphate
- nitrophyte
- nitro-reductase
- nitrosamin
- nitrosamine
- nitrosation
- nitroso compound
- nitroso ligand