بیاد استاد بزرگ خسرو آواز ایران زمین بیاد امپراطور موسیقی سنتی ایرانیان استاد شجریان روحش شاد اگرچه دولت حرمتش را ارج ننهاد ولی برای ما عاشقان هنر و موسیقی ایران زمین این فقدان جانسوز و هجران سخت عزای عمومی است 🆔@SolidWorks2019

Remember the great king , the song of Iran, remember the emperor of Iranian traditional music, Master Shajarian, his happy soul, the government of the Islamic Republic of Iran did not respect his honor, but for us, lovers of Iranian art and music, 🆔@SolidWorks2019

Hello dear engineers
Accept my apology for being a little poor at uploading educational content. Unfortunately, I am currently working on the design of waste disposal lines. I need a lot of time to design and calculate the design of these machines and I can not spend more time for you, but I will try to put some useful tutorials that I have collected during this period in the channel for you. I hope you use these tutorials and again, if anyone has the ability to cooperate in uploading educational, scientific and engineering content, please cooperate as an admin in the channel. I sincerely welcome you, David
My contact number is 09195856189. The same number also has a telegram page 🆔@SolidWorks2019