Mark Falcoff on “The German Empire, 1871–1918,” by Roger Chickering.

The India Story’, Dinesh C Sharma looks at the life and work of the NASA astronaut he calls ‘Marathoner in Space’ ...

Canon's AE-1 heralded a watershed in camera design, putting electronics in the hands of masses of photographers ...

“验药”通常指对药品质量、成分、真伪及安全性的检测与验证，是保障用药安全的关键环节。其核心逻辑在于通过科学手段确保药品符合法定标准，避免假药、劣药流入市场。尤其是中药，需验证是否含毒性成分（如马兜铃酸、乌头碱）。同时还需要检查重金属（铅、砷）及农药残 ...