locking system

• 闭锁系统

locking system的用法和样例：

例句

1. Every product that folds shall have a latch system that requires positive action on the part of the user to permit folding of the product.
   每个有可折叠机构的产品，均需有闭锁系统来确保折叠这个动作是有用户来操作的。