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

全球唯一能够确保每次产出的同一色号的棉线无色差。

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

讨论了在光学设计中的信噪比要求，天线条件，色差兼容和布喇格条件。

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

从而为优化菱体型相位延迟器的消色差性，扩大材料的选取范围提供理论指导。

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

给出一种新的三元复合式消色差补偿器，该补偿器具有调节方便、精度高、在一定波长范围内消色差性能良好等优点。

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

从谐衍射元件的理论出发，讨论了谐衍射透镜在消色差和消热差时的特性。

6·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.

污水色度的测定一般采用稀释倍数法，该方法在用人眼判定稀释后的水样是否接近无色时容易引起误差。