Tungsten simbi (tungsten carbide) ine nhevedzano yezvivakwa zvakanakisa senge kuomarara kwakanyanya, kupfeka kuramba, simba rakanaka uye kuomarara, kupisa kupisa uye kusaita ngura, kunyanya kuomarara kwayo uye kupfeka kuramba, kunyangwe patembiricha ye500 ℃. Inoramba isina kushanduka, a...
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