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روش اول : از نظر تئوری، این سنگها به دو صورت قابل تولید هستند. اول این که کلا در محیط آزمایشگاه ساخته شوند. یعنی سنگهای طبیعی تجزیه میشوند و فرمول مواد تشکیلدهندهی آنها استخراج میگردد، بعد در آزمایشگاه با توجه به آن فرمولها، همان مواد را به صورت مصنوعی میسازند. این کار بسیار زمانبر بوده و خیلی هم گران تمام میشود. پس از روش دوم استفاده میکنند...
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