The device USES mirrors to bounce the laser's light back and forth until it has touched every molecule a patient exhales in a single breath, the team reported in the journal Optics Express.

该团队在Optics Express杂志中报道，这种仪器利用镜片使激光来回反射，直到将病人一次呼出的气体中的所有分子全部测到。

Seafloor terrain and relief can express spatial information of oceanic world, and they are also seafloor field that are difficult to be detected by optics and electromagnetism.

海底地形地貌能表现海洋世界重要的空间信息，也是常规光学和电磁手段难以探测的水下区域。