英语语法分析

A 48-bit serial number is factory lasered into each DS1991 to provide a guaranteed unique identity which allows for absolute traceability.

每片DS1991内部都有在工厂 光刻的48位序列码，为唯一的身份验证提供了保证，也确保了可绝对跟踪功能；

In the waiting room, two artworks featuring the lasered signatures of the founder and his son function as a personal welcome to the visitor.

项目中的等候室内陈列着两件艺术品，展示事务所创始人的激光签名，作为欢迎顾客的招牌。

Also keep in mind that using a laser to produce a mark on bare metal will require the use of a special metal marking chemical that, when lasered, produces a black mark.

当然还要记得，如果用激光系统对稀有金属进行雕刻的话，就必须要用一种特殊的金属进行标记，这种金属在被激光雕刻之时，会产生黑色的记号。