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
- Hafele Keating experiment
- Hafele-Keating experiment
- Hafen City
- Haffner effect
- Hafnia alvei infection
- hafnium
- hafnium alloy
- Hafnium isotope geochemistry
- hafnium metallurgy
- hafnocene
- Hafsid Dynasty
- Hag
- Hagedorn equation of state
- Hagedorn temperature
- Hagedorn温度
- Hage Gottfried Geingob
- Hagenbach correction
- Hagen crater
- Hagen-Rubens relation
- Ha Geun-chan
- Hagg compound
- Haggim
- Hagg’s rules
- Hagiographa
- Hagiwara Sakutaro