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
- the thought of disaster prevention and relief in ancient China
- the thought of Ever-normal granary
- the thought of everybody be treated equally and treasure be distributed fairly
- the thought of financial in ancient China
- the thought of foreign trade in ancient China
- the thought of land system in ancient China
- the thought of Management industry in ancient Chinese
- the thought of objecting extravagance and praising austerity
- the thought of price in ancient China
- the thought of rich country in ancient China
- the thought of rich people in ancient China
- the thought of rural normal education
- the thought of tax in ancient China
- the thought of use through the useless
- the thought of value in ancient China
- the three aligned dramatic stages of the Zhenze Palace in Huguan County
- the Three Categories
- The Three-Character Classic
- The Three Clerks
- the three-context principle
- The Three Demons at Dingzhou
- the three directors of a monastery
- the three great stones in south China
- the three human establishments
- the three immortalities