tympanic wall的用法和樣例：
例句
- The wall must be protected against chemical attack from highly corrosive components of the combusting gases.
必須把室壁保護起來(lái)以防止來(lái)自燃氣的高度腐蝕性成分的化學(xué)侵蝕。 - Although the presence of fuel-rich boundary injection apparently degrades engine stability, it is generally necessary to enhance chamber wall endurance.
盡管富燃料邊界噴射的存在顯然降低了發(fā)動(dòng)機的穩定性，但通常這是為增強室壁的耐久性所必需的。
