عملکرد سوپاپ سه قلو – ترمز با هوای فشرده در راه آهن Air Brake System in Railway – Triple Valve Operation
با قطع شدن جریان هوا بدلایل فنی یا کاهش فشار آن توسط لکوموتیوران، سوپاپ سه قلو در اثر اختلاف فشار ایجاد شده وارد عمل شده و اتصال مخزن کمکی هوا با سیلندر ترمز را برقرار می کند و پیستون سیلندر هوا از طریق اهرم‌بندی کفشکها را به چرخ‌ها فشار داده و در اثر نیروی اصطکاک سرعت قطار کم شده یا متوقف می شود.
عملکرد سوپاپ سه قلو – ترمز با هوای فشرده در راه آهن Air Brake System in Railway – Triple Valve Operation
با قطع شدن جریان هوا بدلایل فنی یا کاهش فشار آن توسط لکوموتیوران، سوپاپ سه قلو در اثر اختلاف فشار ایجاد شده وارد عمل شده و اتصال مخزن کمکی هوا با سیلندر ترمز را برقرار می کند و پیستون سیلندر هوا از طریق اهرم‌بندی کفشکها را به چرخ‌ها فشار داده و در اثر نیروی اصطکاک سرعت قطار کم شده یا متوقف می شود.
At this point, however, Durov had already been working on Telegram with his brother, and further planned a mobile-first social network with an explicit focus on anti-censorship. Later in April, he told TechCrunch that he had left Russia and had “no plans to go back,” saying that the nation was currently “incompatible with internet business at the moment.” He added later that he was looking for a country that matched his libertarian ideals to base his next startup. The War on Fakes channel has repeatedly attempted to push conspiracies that footage from Ukraine is somehow being falsified. One post on the channel from February 24 claimed without evidence that a widely viewed photo of a Ukrainian woman injured in an airstrike in the city of Chuhuiv was doctored and that the woman was seen in a different photo days later without injuries. The post, which has over 600,000 views, also baselessly claimed that the woman's blood was actually makeup or grape juice. A Russian Telegram channel with over 700,000 followers is spreading disinformation about Russia's invasion of Ukraine under the guise of providing "objective information" and fact-checking fake news. Its influence extends beyond the platform, with major Russian publications, government officials, and journalists citing the page's posts. Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. As the war in Ukraine rages, the messaging app Telegram has emerged as the go-to place for unfiltered live war updates for both Ukrainian refugees and increasingly isolated Russians alike.
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