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(méi)有任何一個(gè)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臺與基準管軸線(xiàn)一致性的光電檢測技術(shù)原理和方法。
