Einstein's elevator; Artillery range; Uniform acceleration and circular motion using dimensional analysis.

爱因斯坦电梯；炮火射程；匀加速度和圆周运动的量纲分析。

youdao

Military planners say a barrage of North Korean short range missiles and artillery could kill hundreds of thousands in the capital city,Seoul, in a matter of hours.

VOA: standard.2009.10.13

The military aim is to push the rebels beyond artillery range of the medieval port.

CNN: New fronts may open the Balkan war

By mid-week, Russian forces had taken up positions along the Terek river, and some were within artillery range of Grozny.

ECONOMIST: Special

British forces late Wednesday and Thursday bombarded Iraqi forces around Basra with long-range artillery.

CNN: Complex found bulging with food in hungry city