[计] overhead bit
... overhead 架空的,总的,经常的,辅助操作 overhead bit 附加位 overhead bridge 天桥 ...
[测] additional potential
... 附合水准路线annexed leveling line 附加位additional potential 附条件参数平差,*附条件间接平差parameter adjustment with conditions ...
extra order
... extra quality特优质量 extra order附加位 extra pulse过脉冲 ...