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
- China Screen
- China Sculpture Museum
- China's declaration of war on Japan
- China's dictionary history
- China sealavender
- China Seal Cutting
- China Sea minerogenetic province
- China's early press political theory
- China's economic cooperation zone
- China's economic globalization
- China's economic new normal
- China's economic transformation
- China Security and Protection Industry Association
- China Security Association
- China's Education Modernization 2035
- China Seed Industry
- China's E-Government Information Resources
- China's E-government laws and regulations system
- China's E-government management system
- China's e-government service and application system
- China's E-government system
- China seismological bulletin
- China Seminar on Stage Art and Drama
- China's Entry into WTO
- China's Environmental Protection (White Paper)