导轨

huá mén dǎo guǐ

滑门导轨

sliding door guide

diàn lǎn dǎo guǐ

电缆导轨

cable guide

tú xiàng dǎo guǐ shang yǒu hòu de huī chén

图像导轨上有厚的灰尘。

There was thick dust on the picture rail.