1. So the theoretical basis is provided for optimizing achromatism of the rhomb-type retarder and the material selecting scope can be extended.

2. The chemical lab could be equipped with achromatism lucency glass.

3. Ms. Feng selects and purchases when the floor pays great attention the achromatism and the superficial texture consistency excessively, this is an erroneous zone similarly.

4. The whole world can guarantee only each time delivers identical color number cotton thread achromatism .

5. The SNR, the antenna condition and the Bragg condition as well as achromatism in optical design are discussed.

6. From the characteristic of harmonic relief patterns, the a thermalization and achromatism of harmonic diffractive element have been studied in the paper.

7. The initial configuration of this system as well as the surface parameters of BOE are established according to theory of achromatism , and further more, the structure is optimized.

8. The method for determine sewage's chroma is method of dilution multiple. It's easy to bring in error when using eyes to determine the diluted sample is whether achromatism or not.

9. As compared to common compensators, this compensator is convenient to operate, and has a high degree of accuracy and a good nature of achromatism .