أخبار حلول نظام المراقبة والأمن MCCTV من CCTUNG

#carbon fiber ( #CarbonFiber) is a fiber-like material with carbon as the main component (more than 90% carbon content, high performance grade often up to 95%). It is made from polyacrylonitrile, bituminous or viscose and other high temperature processes such as pre-oxidation and carbonization. It has both light weight, high strength, high modulus and corrosion resistance. It is not a natural form of single element carbon, but a artificially prepared fiber-shaped carbon material with mechanical properties far superior to traditional metals, often combined with resin to form a carbide composite. Here is the timeline for carbon fiber development: 1850 -...

A summertime stroll through any Chinese city reveals a familiar sight: individuals, predominantly men clad in T-shirts, seated on low stools in the shade, engaged in a game played with large wooden disks. If weiqi represents the ancient pastime of Chinese scholars, then xiangqi, or Chinese chess, is decidedly the game of the common people. While its appearance differs markedly from Western chess, the two games share fundamental similarities in piece movement and strategic objectives. The primary goal in both games is to checkmate the opponent’s primary piece, the “general” in xiangqi, analogous to the king. A significant distinction, however, lies in...

The term "rites of passage" is, in essence, an academic construct predominantly situated within the domain of folklore studies. It denotes the ceremonies and rituals conducted to mark an individual's transition from one social status to another. Across global societies, pivotal moments in the human lifecycle are universally commemorated through distinct ceremonial practices. While various cultures emphasize different developmental stages and celebrate them in profoundly diverse ways, the Chinese observance of these milestones bears the profound imprint of Confucianism. It is widely acknowledged that Confucianism has exerted a deep and enduring influence on Chinese society and culture, fundamentally shaping the...

Duck has long been a staple of Chinese cuisine, with its most celebrated preparation—roast duck—originating in the Tang Dynasty (618–907 AD). Initially known as shāo yāzi (literally "roast duck"), the dish was cooked over wood or charcoal fires, with successive generations refining the technique. By the Yuan Dynasty (1271–1368), roast duck had gained imperial favor. Hu Sihui, a court dietary physician, documented its preparation in Complete Recipes for Dishes and Beverages (1330), cementing its status as a royal dish. When the Ming Dynasty was established in 1368, Nanjing became the capital, and imperial chefs perfected the method of roasting ducks...

Four Treasures of the Study 文房四宝 Four treasures of the study-brush, ink, paper and ink slab, can not be neglected when we appreciate and understand Chinese calligraphy and traditional painting because they determine the features and the expressive forms of the work of art. It is widely accepted that the best of each of these items is represented by the Hu brush, Hui ink stick, Xuan paper, and Duan ink slab, all being highly valued in both China and abroad. Hu brushes are produced in Huzhou, Zhejiang province. Made of the hair of goats or wolves, they are round, neat, strong,...