DIN ISO 20816-21 E:2024 机械振动 机器振动的测量和评估 第21部分：水平轴风力涡轮机 (ISO/DIS 20816-21:2023) 草案
Draft Document - Mechanical vibration - Measurement and evaluation of machine vibration - Part 21: Horizontal axis wind turbines (ISO/DIS 20816-21:2023); Text in German and English