mechanical protetion of wood

例句：

1. 1. The engineer designed anew machine to improve the efficiency of thefactory.
   工程师设计了一种新型机器以提高工厂的效率。
2. 2. The car's mechanical protection systemis designed to prevent accidents.
   汽车的机械防护系统旨在防止事故。
3. 3. Thecompany has implemented strictersafety regulations to ensure the mechanicalprotection of its workers.
   该公司已实施更严格的安全规定，以确保其工人的机械保护。