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
- materials stabilized with inorganic binder
- materials storeroom for cultural relic restoration and research
- material standards information
- materials technology
- material sterilization
- material storage equipment
- materials with acoustic gradad index
- material symmetry
- material teratogenicity
- material testing system
- material time rate of change
- material to photodegrade dioxin
- material toxicity
- material transfer
- material unaccounted for
- material wave
- material wave velocity
- materia medica
- materia medica derived from the sea
- Materia Medica for Decoctions
- Materia Medica for Dietary Therapy
- Materia Medica for Dietotherapy
- Materia Medica for Famine Relief
- Materia Medica from the[Southern]Seaboard Area
- Materia Medica of Sichuan