the point where the optic nerve enters the retina; not sensitive to light 同义词：blind spot, optic disc,
例句与用法
1.
Imaging materials - life expectancy of magneto - optic disks - method for estimating , based on effects of temperature and relative humidity 成象材料.磁光盘的预期寿命.基于温度和相对湿度作用的评定方法
2.
In the past few years , with the development of electronic technology and semiconductor storage device , solid state recorder ( ssr ) based on dram and flash memory has taken place the tape recorder , magnetic disk and magnetic - optic disk and been the dominating solution for the storage of mass data in the spacecraft 近年来，随着电子技术的发展和半导体存储器密度的不断提高，以dram和flash为主的固态大容量存储器逐渐取代了早期星上的磁记录设备而成为空间飞行器数据记录的主流方案。
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