The main function is to guide the spot light source of LED to plane light source.
导光板主要功能是引导LED的点光源成为平面光源。
Visitors go aboard the plane and begin the tour. ORBIS staff act as the guide.
参观者上飞机参观(飞机上注意事项如下)，由奥比斯工作人员进行讲解。
Visitors go aboard the plane and begin the tour. ORBIS staff act as the guide.
参观者上飞机参观(飞机上注意事项如下)，由奥比斯工作人员进行讲解。
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