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
- petroleum wax
- petroleum wax production
- petroliferous basins
- petrolift
- petrologial constitute
- petrologic types
- petrology
- Petropavlovskiy crater
- Petropavlovsk-Kamchatskiy
- petrophysical facies
- petrophysical properties of rock
- petro physics
- petrophysics
- Petrosani
- petrosavia family
- petrosectomy
- petroselinic acid
- petrous bone cholesteatoma
- Petrov
- Petrov classification
- Petrov Galerkin method
- Petrov-Galerkin method
- Petrov notation
- Petrovskiǐ
- Petrovskiǐ condition