1. Information on the storage and transportation of light hydrocarbons in natural gas

Natural gas is a gaseous fossil fuel mainly composed of methane. It mainly exists in oil fields and natural gas fields, with a small amount also found in coal seams. When non fossil organic matter undergoes anaerobic decay, it produces methane rich gas, which is called biogas. The sources of biogas include swamps between forests and grasslands, landfills, sludge in sewers, and manure, which are produced by anaerobic decomposition of bacteria. Biogas also includes gastrointestinal distension (such as farts), which most commonly comes from livestock such as cows and sheep. When methane escapes into the atmosphere, it will be a greenhouse gas that directly contributes to the worsening of global warming. This scattered methane will be regarded as a pollutant rather than a useful energy source. However, once methane in the atmosphere oxidizes with ozone, it becomes carbon dioxide and water, so the greenhouse effect caused by methane emissions is relatively short-lived. And in terms of combustion, natural gas produces much less carbon dioxide than coal and other Carboniferous fuels. The important biological sources of methane are termites, ruminants (such as cows and sheep), and human cultivation of land. It is estimated that the annual emissions of these three are 1

5, 75, and 100 million tons respectively (the total annual emissions are about 100 million tons).

2. I need English materials on plastic molds

Engineering/Design department: 1) Designer - Designer. 2) Assembly drawing - Mold assembly drawing. 3) Mold layout - Mold structure diagram. 4) 2D product drawing -2D product drawings. 5) 3D product data -3D product data. 6) Part drawing - Bulk drawing. 7) Insert molding - Insert mold. 8) 2 color mold/Double injection tool - Two color mold. 9) Hydraulic system - oil/water pressure system. 10) Parting line - parting line. 11) Air venting - exhaust duct. 12) Cooling system - Cooling system. 13) Screw - screw. 14) Hot runner system - Hot runner. 15) Valve gate - Needle inlet. 16) Fan gate - Fan shaped inlet. 17) Pin point gate - Pin point injection. 18) Moon gate/Banana gate - Banana, ivory inlet. 19) Submarine gate - diving port. 20) Injection machine tonnage - The tonnage of injection molding machines. 21) Number of cavities - Number of cavities. 22) Steel - Steel. 23) Copper - Copper. 24) Tungsten copper - Tungsten copper. 25) Beryllium copper - Beryllium copper. 26) Hardening - hardening/quenching. 27) Tempering - Tempering. 28) Chroming - Electroplating. 29) Painting - Spray painting. 30) Resin - adhesive material. 31) Printing - Screen printing. 32) Texturing - Curling/biting patterns. 33) Socket screw - with shoulder screw. 34) Inter lock/Straight lock - Model lock. 35) Mold lock - transport block. 36) 3 plate mold -3 plate molds. 37) Hot runner plate - Hot runner plate. 38) Guide plate - guide block. 39) Transparency - Transparency. 40) Runner puller pin - rubber crochet hook. 41) Top clamping plate - First template. 42) Bottom clamping plate - the last template. 43) Ejector plate - ejector plate. 44) Pressure block - Compression block. 45) Spacer block - a stepping stone. 46) Sectioning - Section. 47) R&D (Research&Design) - Design and Development Department. 48) Main manifold - Hot runner main manifold core. 49) Slug well - cold material well. 50) Cold slug - Cold slag. 51) Dowel pin - positioning pin. 52) Carving -

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