فوکر درایدکر ۱-۱۹۱۷-

این هواپیمای سه باله ی آلمانی شاید معروف ترین هواپیما در جنگ جهانی اول باشد۔

Endocrine system

Glands of the endocrine system secrete hormones into the blood.

Female reproductive system (intermediate)

The reproductive system is a series of organs working together for the purpose of reproduction.

Medieval smithy

The work of smiths – one of the first professions in history – became even more important in the Middle Ages.

NAD⁺, NADP⁺, NADPH

NAD⁺ is a coenzyme that plays an important role mainly in catabolic processes, while NADP is important in anabolic processes as hydrogen carriers.

Cannon operation (18th century)

The cannon was an important type of firearms at the beginning of modern history, widespread both on land and water.

Hubble Space Telescope

The Hubble Space Telescope orbits outside the distorting influence of Earth´s atmosphere.

Types of surface epithelium

Surface epithelia cover the external and internal surfaces of the body

B-17 Flying Fortress (USA, 1938)

The ´Flying Fortress´ was developed for the United States Army Air Force by Boeing

Traditional Eskimo lifestyle

Igloos were the typical dwellings built by Eskimos living in the Arctic zone.

Continental drift on a geological timescale

The Earth's continents have been in constant motion during the history of the planet.

Water supply system

The water supply system provides clean and safe drinking water for the consumers.

Viking longship (10th century)

These excellent shipbuilders and sailors travelled great distances on the seas and rivers.

V-2 ballistic missile (1944)

The German liquid-propellant rocket, developed during WWII, was the first known man-made object to reach space.

سیاه چال قرون وسطایی

طیف گسترده ای از دستگاه های شکنجه در سیاه چال های قرون وسطایی استفاده مي شد۔

Working-class district (19th century)

Typical working-class districts with unhealthy living conditions were built at the time of the Industrial Revolution.

Milky Way

The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion stars, one of which is our Sun.

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