We inspect etch channel density of the seed piece by piece.

低腐蚀隧道：为确保低腐蚀隧道密度，我们对晶种的腐蚀隧道密度进行逐块检测。

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Higher channel density is good for improving the cell performance.

流场细密化有利于电池性能的提高。

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In the plain area, because of the channel density is large and the slope of riverbed is small, the channel flow is slow and the waterlogging often occurs.

平原地区一般河网密度高，河道比降小，水流流泄不畅，极易造成内涝灾害。

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He is creating computer simulations to model the liver, so optimum channel size, flow rate and density of cells can be calculated as accurately as possible, before the artificial liver is constructed in the laboratory.

BBC: NEWS | Health | Glass liver may aid disease fight