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。
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。
Fixed spray arms to get superior wash power comparable with conveyor-type dish-machine. Rinsing spray arms both fixed and rotating to ensure no blind wash area.
主洗采用固定式喷臂，超强的洗涤力堪比通道式洗碗机。漂洗喷臂采用固定和旋转相结合的形式，使餐具的洗涤没有盲区。
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