If you want to raise a cylinder of tropical fish, you want to arrange a beautiful tank view and find all the materials and usage you need. Tropical fish tropical fish was born in tropical waters.Tropical fish are divided into freshwater tropical fish and seawater tropical fish.But in the north-south temperate waters near the tropics and at its junction,All fish species with ornamental value,It's also classified as tropical fish,So,Its distribution also includes some subtropical areas.What we introduce here is the tropical ornamental fish species that live in fresh water.Tropical fish,In fact, it is different from other ornamental fish for fish lovers,This part of the ornamental fish that is unique to tropical and subtropical areas is collectively referred to as tropical fish.They live in freshwater waters such as rivers, streams and lakes.Home of tropical fish,Mainly in Southeast Asia, Central America, South America and Africa,Among them,The Amazon River system in South America produces the most

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What does PCWS mean in HVAC? PCW, PCWR, etc... It's best to have a full set of HVAC abbreviations for me. thank you. Absolute Filter,In the early days, a foreign company named the commodity with partition efficient filter,Corresponding filtering efficiency 99.97% (0.3mm DOP ).AC fine (Air Cleaner Test Dust, fine ),The United States stipulates standard dust for the performance test of filter and dust removal equipment,Except China and Japan.The dust was taken from the Arizona desert area of the United States,Commonly known as Arizona Road Dust.Adding a specified amount of staple fiber and carbon black into AC fine ash,It became ASHRAE standard dust commonly used in filter tests.The ISO of the International Organization for Standards stipulates that the filter effect of the car filter is measured with AC fine ash.Aerosol,A relatively stable suspension system of solid or liquid particles formed with gas.International,M