Data correlation coefficients were calculated and switch regions were analyzed by using two dimension discrete cosine transform (DCT) in ray-space data compression.

在光线空间的数据压缩中，计算了数据的相关系数，采用二维离散余弦变换(DCT)进行了变换域分析。

youdao

After the air deflation, turn off "power switch", put the rubber surface up to half vertical, protects the compression gas bomb reed.

放气后，关闭“电源开关”将橡胶面盖半立，以保护压缩气弹簧。

youdao

Each day he clamped a Lange V9 ski boot onto the metal stem of an 8-foot-high Instron compression machine and flipped the power switch.

FORBES: Magazine Article

Each day he clamped a Lange V9 ski boot onto the metal stem of a 2.5-meter-high Instron compression machine and flipped the power switch.

FORBES: Revenge of the nerds

There's also an off-road mode, which essentially gives you the option to switch over to Opera Mini for extra data compression for those times you need it -- this obviously comes in handy when you're reaching your data threshold or just in a low-reception area.

ENGADGET