Glass Science &Technology Magazin | United States America (US)

Create: 2022-12-05 Update: 2025-07-02 20:50:06

انواع شیشه کریستال 🫧🫧🫧قاعده مرسوم این است که محتوای بیشتر اکسید سرب در کریستال باعث شکست نور بهتر می شود، لذا بر اساس میزان اکسید سرب سه نوع کریستال وجود دارد:
1 کریستالین با حدودا 6 تا 10 درصد اکسید سرب. البته در امریکا هر شیشه ی شفاف با هر مقدار اکسید سرب را کریستال می نامند.
2 نیمه سرب با حدود 24 تا 30 درصد اکسید سرب.
3 کریستال پر سرب با مقدار سرب بیش از 30 درصد
همین طور بر اساس هنر ساخت، سه نوع کریستال وجود دارد : 1- تراش خورده با ماشین، 2-تراش خورده با دست، 3-دست ساز

Glass Science &Technology Magazin

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How to Hide a Telegram Chat Without Permanently Deleting It

The easiest way to hide texts from view in Telegram without deleting them is to achieve them, although the process requires a few extra steps to complete. Follow the instructions below to do so on both mobile and PC. Open the Telegram mobile app (Android | iOS) and locate the convo you wish to archive, but don’t tap on it. Long-press it until you see a green checkmark appear next to the contact’s profile picture. A few buttons will show up in the upper-right corner as well. Select the “Archive” icon.On PC, you’ll need to right-click on the conversation on the right side of the display and select the “Archive” option.

انواع شیشه کریستال 🫧🫧🫧قاعده مرسوم این است که محتوای بیشتر اکسید سرب در کریستال باعث شکست نور بهتر می شود، لذا بر اساس میزان اکسید سرب سه نوع کریستال وجود دارد:

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