fire assault造句

• Artillery plays a major role in fire assault of land force . how to improve fire reaction speed and hitting accuracy on the condition available has been the main researching subject of towed artillery for a long time
  炮兵是陆军火力突击的骨干力量，如何在现有装备条件下提高火力反应速度和命中精度是长期以来牵引炮兵研究的主要课题。