including the atoms, molecules, and ions that make up compounds and their composition, structure, behaviour, and changes that occur when they interact with other things.
808, also known as Nobel 808 (often just called Explosive 808 in the British Armed Forces during the Second World War), developed by the British company Nobel Chemicals Ltd well before World War II. It had the appearance of green plasticine with a distinctive smell of almonds. How big of ...
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随即出现斜颈，咀嚼动作增多，感到脚底冒冷气，容易疲劳，躺在床上休息时，不能很轻松入睡。食欲明显减退，焦躁不安，常因小事发脾气，事后又非常后悔。由于反复发作，患者极为痛苦。经营一家水果店，生意基本未受影响，家庭支持好。家族史：两系三代无精神病史。性格：内向，不善言谈。 [案例二十三]该...
2 Firework A device containing gunpowder and other combustible chemicals which causes spectacular effects and explosions when ignited, used for display or in celebrations They were oohing and aahing as if they were watching the fireworks A firework display Pyrotechnics Pyrotechnics is the science and ...
The smell of rotten eggs. In its natural state, natural gas is odorless and colorless. To make gas leaks easier to detect, gas companies add chemicals called odorants to create a natural gas smell similar to sulphur or rotting eggs. The stronger this smell, the more likely it is that you...
Chief Drabick was presented with this devil’s bargain: Wait, and potentially watch the exploding tanks rain shrapnel and poisonous chemicals on his town, or release mass quantities of vinyl chloride—a known Group A carcinogen—into the atmosphere. “I was given thirteen minutes to make a ...
see lava spewing from fissure vents. That's why Iceland is an attractive tourist destination during eruptions: People can usually watch the lava flow without being in danger. When the 1,800-degree Fahrenheit lava flows into the water, though, explosions of steam can scatter ash into the air....
but this is how swaging is done. Substituting the RBT-2-S or -H dies for the one CS-1-S core seater lets you make RBT (Rebated Boattail) bullets. Nicer lead tips are formed if you make the lead core longer than the jacket and then re-shape the tip in a LT-1-S or -HLead ...
Environmental Damage:Blood diamond exploration and mining often sacrifice forests, soil, and water while using large amounts of chemicals. This destroys the current living environment and water conditions, and further damages the local ecosystem, making it difficult for future generations to sustain them...