tympanic wall的用法和样例：
例句
- The wall must be protected against chemical attack from highly corrosive components of the combusting gases.
必须把室壁保护起来以防止来自燃气的高度腐蚀性成分的化学侵蚀。 - Although the presence of fuel-rich boundary injection apparently degrades engine stability, it is generally necessary to enhance chamber wall endurance.
尽管富燃料边界喷射的存在显然降低了发动机的稳定性，但通常这是为增强室壁的耐久性所必需的。
