压力平衡式轴承密封
pressure balanced bearing seal
轴向力平衡装置
axial thrust balancing device
轴向推力平衡装置
axial thrust balancing apparatus
MM5非静力平衡模式
MM5 non-static balance model
摆式力平衡加速度计
pendulous force balance accelerometer
不平衡力补偿
Unbalance force compensation
侧向力平衡设计
lateral force balance design
层间力平衡法
story-force equality method
层间应力平衡
equilibrium of stresses between