自然硫化又称室温硫化。橡胶胶黏剂或修补用胶料,不经加热在常温下放置一段时间即可自动硫化的方法叫做自然硫化。主要指的是天然橡胶或丁苯橡胶,加硫黄及二硫化氨基甲酸盐类超速促进剂,可使胶黏剂或胶料在室温下停放一段时间后完成自然硫化。
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人体本身也会自然产生很少量的硫化氢,但高剂量的硫化氢就成了一种广谱的毒剂。 它会同时影响身体的各个系统,尤其会对神经系统带来损伤。
While the gas is produced naturally by the body in low doses, in high doses it acts as a broad-spectrum poison, affecting many of the body’s systems simultaneously, particularly the nervous system.
随着时间过去,大蒜中的粗糙的有刺激的复合物自然转换稳定的,安全的硫化合物。
Over this time period the harsh and irritating compounds in garlic are converted naturally into stable and safe sulfur compounds.
泉水上部的石块被绿色生物膜覆盖,它通过阳光和硫化物自然的发生化学反应生存。
The top of the springs' rocks are covered with green biofilms, which use both sunlight and sulfide-naturally occurring chemicals from the springs-to survive.
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