工学 井下工具 释 shock absorber 减振器 吸收钻井中产生的冲击和振动负荷，保护钻头牙齿、轴承和钻具，提高钻头及其他钻具寿命的工具。
计算机硬件 计算机工程设计 释文 shock absorber 减震器
- proper coloring
- proper complex orthogonal group
- proper component
- proper concave function
- proper cone quasi convex function
- proper cone quasi-convex function
- proper congruence
- proper conic
- proper continuum
- proper conversion
- proper convex body
- proper convex cone
- proper convex function
- proper convex set
- proper cover
- proper cutset
- proper cycle
- proper differentiability
- proper differentiable mapping
- proper direction
- proper disconnection group
- proper distance
- proper distribution
- proper divergence
- proper divisor