This article analyses the effect of motional loading and basicresistance on the intensity calculation of seamless railroad.
本文分析了运动荷重与基础阻尼对铁路无缝线路强度计算的影响。
2
It's the basic physics that the air is thinner and the resistance to any projectile is less so the flight path of the ball will be different at high altitude.
基本物理学理论上，空气越稀薄情况下，任何物体的耐性都会减少，因此球路也会因海拔高度不同而有所变化。
3
Strengthen basic TB care to prevent the emergence of drug-resistance.