single seed descent, SSD
单一平面平均内径
single plane mean bore【机】
暂无补充释义。
相关词条
single side rack
one-way trunk【通信】;one-way trunk line【通信】;single action trunk【通信】
single-phase safety plug with socket
single-pole circuit breaker
yig single crystal device【电子】;yttrium iron garnet single crystal device【电子】
single twitch
single-pole enclosed fused switch