The optic disc is a blind spot because no light receptor cells are present in this area of the retina where the optic nerve and retinal blood vessels leave the back of the eye.
视盘是个盲点，因为视网膜的这个区域没有光感细胞，视神经和视网膜血管从眼睛后面的这个部位伸出去。
This algorithm considering the limitation of node energy, network connectivity, no repetitive, node mobility, using the minimum nodes in order to get no blind of area coverage.
该算法考虑到节点能量的有限性、网络的连通性、覆盖无重复性、节点的移动性特点，利用最少的节点达到区域覆盖无盲区。
With the advantage of compact structure, stable motion and no blind rock drilling area, double triangle boom is used in rocking drilling robot.
双三角钻臂具有结构紧凑、运行平稳、凿岩无盲区等优点，被凿岩机器人所采用。
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