primary communication key

基本解释

As the primary designer, organizer, leader of a preschool, the management capability is the key element for preschool directors, and the communication plays the most essential role in it.
园长是幼儿园管理的主要设计者、组织者和指挥者，园长的管理能力是决定因素，而沟通又是管理中最关键的影响因素。
The optical coupling technology is the key technology in optical communication, optical sensor and optical integration, and it will hold the primary status in optical networks in the future.
光耦合技术是光通信、光传感以及光集成领域中的关键技术，在未来的全光网络中占据有重要的地位，因此对光耦合理论进行研究是很必要的。