经过多年研究，伽利略已经学会如何反射和折射光线，以及如何让观察者通过望远镜看到两小时航程外的船只。他用望远镜遥望夜空，成了观察到木星的卫星和月球上火山的第一人。

UNITED NATIONS, June 3 (Xinhua) -- The new aid scheme for Gazans run by the United States and supported by Israel is a recipe for disaster, said a UN spokesman on Tuesday. Scores of deaths have been r ...

UNITED NATIONS, June 3 (Xinhua) -- A UN spokesman on Tuesday condemned an attack that killed five UN aid convoy workers in Sudan.

Open restaurant, white wall design, steam oven and other modern electrical appliances are all embedded in the restaurant, the bar and restaurant connection restaurant to form an unimpeded open field, ...

This industry-first, full-parameter, cable-lite solution transmits vital signs data wirelessly to the BeneVision V Series monitor. This frees patients from bedside cables, allowing unimpeded mobility ...