Achromatic and pseudocolor holograms.

消色差和伪彩色全息图。

Water is achromatic.

水是无色的。

Approximate U achromatic color or yellowish transparent liquid.

近似无色或微黄透明液体。

Black, white and gray are achromatic, but called colors by artist.

黑色，白色和灰色是无色的，但美术家却称之为颜色。

For the transmissive mode, no achromatic quarter-wave film is needed.

在透射模式中，不需要消色差的四分之一波片。