beam positionbi:mpəˈziʃən短语¹⁴⁴⁹⁷²⁺² 基本例句 波束指向 The essential components in the system include a laser diode coupled to a single-mode optical fiber, a triangular optical cell, and a high- resolution beam position sensor. 整个实验装置主要包括：耦合在单模光纤中的二极管激光器，三角形光学单元，高分辨率的半导体位移传感器。 dictall