台面和平面结构
mesa and planar structure
平面和差器
Plannar sum and difference comparitor
平面和差网络
planar sum and difference network
planar sum-and-difference network
四面体和平面四边形配合物
Tetrahedral and Square-planar Complexes
承压平面平衡
parting surface support balance
单一平面平衡机
single-plane (static) balancing machine
非定常平面平行运动
unsteady planar parallel flow