Liquid Argon Flow Meter | Welding Machine Translation 4 | Rotameter Flow Meter

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1. Introduction to Mars Mars Mars is one of the eight major planets, ranked fourth in order of distance from the Sun. To the naked eye, Mars is a striking fiery red star that slowly travels among the stars. When viewed from Earth, it sometimes moves forward and sometimes backward, and its brightness often varies. At its darkest, its apparent magnitude is+1.5, and at its brightest, it is much brighter than Sirius, reaching -2.9. Due to its fiery and constantly changing brightness, as well as its variable position, Mars was called "Yinghuo" in ancient China. In ancient Roman mythology, Mars was compared to the god of war, Mars, who was covered in armor and covered in blood. In Greek mythology, Mars is also regarded as the god of war, Ares. Sometimes Mars is also referred to as the red planet. Quality 6.421e+23 kg Equatorial radius 3397.2 km Average density 3.94 gm/cm3 Average daily distance 227940000 km Rotation period 24.6229 hours Orbital period 686.98 days Equatorial surface gravity 3.72 m/sec2 Equatorial escape velocity 5.02 km/sec Minimum surface temperature -140 ℃ Average surface temperature -63 ℃ Highest surface temperature 20 ℃ Atmospheric pressure 0.007 bars Atmospheric composition Carbon dioxide 95.32% Nitrogen 2.7% Argon 1.5% Oxygen 0.13% Carbon monoxide 0.07% Water 0.03% Other 0.000291% The soil on Mars contains a large amount of iron oxide. Due to long-term exposure to ultraviolet radiation, iron forms a layer of red and yellow oxides. To exaggerate, Mars is like a world covered in rust. Due to its distance from the sun, Mars receives only 43% of the solar radiation energy as Earth, resulting in an average ground temperature that is about 30 degrees Celsius lower than Earth, with a temperature difference of up to hundreds of degrees Celsius between day and night. Near the equator of Mars, the highest temperature can reach around 20 ℃. There is also an atmosphere on Mars. Its main component is carbon dioxide, accounting for about 95%, with very small amounts of carbon monoxide and water vapor. Mars is smaller than Earth, with an equatorial radius of 3395 kilometers, which is half of Earths size, less than 1/6 of Earths volume, and only 1/10 of Earths mass. The interior of Mars, like Earth, also has a structure of core, mantle, and crust. The rotation of Mars is very similar to that of Earth, with one rotation lasting 24 hours, 37 minutes, and 22.6 seconds. A day and night on Mars is slightly longer than a day and night on Earth. Mars completes one orbit in approximately 687 days, and one year on Mars is approximately equivalent to two years on Earth. Mars has two satellites. The one closer to Mars is called Phobos, and the one farther away is called Phobos. Due to Mars being regarded as the god of war Ares in Greek mythology, astronomers named its two moons after Ares two sons, Phobos and Driss. Phobos is shaped like a potato and orbits Mars three times a day, with an average distance of about 9378 kilometers from Mars. It is the larger of the two moons of Mars and also the one closer to Mars. The distance between Phobos and Mars is also the shortest among all satellites in the solar system and their host stars, only 6000 kilometers from the surface of Mars. It is also one of the smallest satellites in the solar system. In Greek mythology, Phobos was a son of Ares (Mars) and Aphrodite (Venus). Phobos "means" fear "in Greek (it is a word formation component of" phobia "- fear). Phobos was discovered by Hall in 1877, first p

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