The preparative work includes colour system, selection of colour difference formula, standardization of dyes and chemicals, etc.

利用配色仪进行色彩管理的前期准备，包括：表色体系、色差公式的选择，染料标准化等。

youdao

As a youngster he dabbled in science and devised a system of colour photography.

ECONOMIST: Robert Borkenstein

The US system of colour-coded security alerts may be scrapped under new plans being drawn up by security officials.

BBC: US may scrap colour-coded terror alerts

Using an elaborate system of colour-coded boxes to convey over 170, 000 meals to their destinations each day, the 5, 000-strong dabbawala collective has built up an extraordinary reputation for the speed and accuracy of its deliveries.

ECONOMIST: Management trends