“度”量中国这五年：毫厘之间铸造“中国精度”

Core Insights - The article emphasizes the significant advancements in China's high-end manufacturing sector, highlighting the concept of "Chinese Precision" as a key driver of development during the "14th Five-Year Plan" period [1][2]. Group 1: Manufacturing Precision - A high-precision CNC machine in Shandong produced 127 needle-shaped specimens with a diameter of 0.05 mm from a 30 mm metal rod, showcasing the level of precision achieved in Chinese manufacturing [1]. - The establishment of a large-length reference device in China, with a measurement range of 80 meters and an error margin of only 2.45 micrometers, represents a significant advancement in precision measurement technology [2]. Group 2: Applications in Aerospace and Navigation - The new large-length reference device enhances the precision and reliability of measurements for key components in large equipment, such as spacecraft docking and aircraft assembly, contributing to high-quality development in manufacturing [2]. - The successful launch of the 59th and 60th BeiDou navigation satellites demonstrates the importance of precision in modern transportation, where time and spatial accuracy are critical [4]. Group 3: Expansion of BeiDou System - The BeiDou ground-based augmentation system has been established to provide real-time high-precision positioning services, expanding its applications from traditional surveying to areas like precision agriculture and autonomous driving [5]. - The application rate of the BeiDou system in key transportation sectors has exceeded expectations during the "14th Five-Year Plan" period, indicating its growing importance [4][5]. Group 4: Future Developments - The "Measurement Support for New Quality Production Power Development Action Plan (2025-2030)" aims to address critical measurement issues in industrial development, indicating a continued focus on precision [6]. - The upcoming "15th Five-Year Plan" is expected to further enhance "Chinese Precision," injecting new vitality into industrial development and propelling the economy to higher levels [6].