The laser marker system is made up of laser, optical system and controller, which is the core of the components.
它主要由激光器、光学系统和控制器组成，其中控制器是核心部件。
2
The basic foundation of marker training involves teaching the dog the meaning of these 5 core words.
响片训练的基础需要教会狗儿5个核心单词的含义。
3
It has reference value for decision-marker to make certain reasonable investment scale, plan decision and establish supply chain of the core competitive ability.