"Where there is solidification, there is air gap", air gap is the indispensable condition for an ingot to be pulled out of a mould smoothly.

“有凝固就必然会有气隙的形成”，并且气隙的存在是铸坯能够顺利拉出结晶器的必要条件。

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This air gap allows light to come through the touch sensor and reflect off the LCD, which causes added glare for the user.

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As a result of the improvement, dim and double images are cut off by eliminating the air gap layer between the front glass and Plasma panel.

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Most tablet displays are made up of two pieces of glass-an LCD on the bottom and a touch sensor on the top, separated by an air gap.

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