The newer form of surgery arranges the instruments into two tools which enter the eye through identical tiny slits.
新的手术方式是将器械安排在两个工具内，通过两个完全一样的小切口进入眼睛。
Spitzer's infrared instruments return reams of data to Earth as the orbiting observatory gathers light from far reaches of the universe, light that is invisible to the naked eye.
斯皮策太空望远镜在沿着轨道旋转时，收集了来自广阔太空的各种光线，这些光线对于肉眼来说是不可见的，但红外设备可以观测到，观测结果形成数据被传回地球。
With traditional leveling survey type tilt instruments, the measurement is obtained by observation of human eye, so the accuracy is not high enough and the flexibility is low.
通过人眼观察进行识读的传统水准器式倾斜仪表，直观但精度不高、灵活性不强。
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