rocket mortar的用法和樣例：
例句
- No group has yet said it carried out the rocket attack.Natalia Antelava reports.
沒有任何一個組織宣布對該火箭炮的襲擊負責。 - The photoelectric detection principle and method of the uniformity between the cradle horizontal platform and the fiducial barrel axis of the rocket were presented.
介紹了火箭炮搖架水平台與基準管軸線一致性的光電檢測技術原理和方法。
