Rods are able to function in much lower light than cones - and these were the most common cell types found in all of the sharks.
对于人类而言，视网膜由密集的光感棒体以及视椎体细胞组成。 棒体细胞在弱光条件下比椎体细胞更容易发挥作用，并且这些细胞也是在鲨鱼视网膜内发现的最常见的细胞类型。
The lower light and lack of gadgets and maintenance make these tanks much more efficient and cheaper for folks. If you leave for a week, the tank does fine as is. No worry.
低光照，器材简单，维护量小是这种缸的特点，所以说省钱省心，即使你出去旅游了一个礼拜也不要紧。
A new type of high contrast filter has been investigated in this paper. lt has features of lower light reflection on surface, selective transmission and effective electromagnetic screen.
本文介绍自行研制的高对比度滤光片。它具有较低的表面光反射率、选择性透过率和电磁屏蔽特性。
A new type of high contrast filter has been investigated in this paper. lt has features of lower light reflection on surface, selective transmission and effective electromagnetic screen.
本文介绍自行研制的高对比度滤光片。它具有较低的表面光反射率、选择性透过率和电磁屏蔽特性。
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