Standards

DB31/T 1694-2026 Employer's Guide to Occupational Health Management

Publish Date: 2026-05-01

DB31/T 1695-2026 Lease of Rural Self-Built Housing Fire Safety Management Standards for Residential Use

Publish Date: 2026-05-01

DB31/T 748-2026 The method for calculating and accounting for the difference in water, electricity, and gas metering errors

Publish Date: 2026-05-01

DB31/T 783-2026 Guidelines for Reasonable Energy Use in Colleges and Universities' Buildings

Publish Date: 2026-05-01

DB31/T 838-2026

Publish Date: 2026-05-01

DB31/T 1232-2026 Urban Forest Carbon Sequestration Monitoring and Accounting Technical Specification

Publish Date: 2026-05-01

MH/T 4043-2026 Civil aviation X-band surface surveillance radar equipment technical requirements

Publish Date: 2026-05-01

MH/T 4036-2026 1090MHz Extended Text Broadcast Automatic Correlation Monitoring Ground Station (Receiver) Equipment Technical Requirements

Publish Date: 2026-05-01

GB/T 20147.6-2026 Colorimetry—Part 6:CIEDE2000 colour-difference formula

本文件描述了根据CIEDE2000公式计算色差的方法。
本文件适用于按GB/T 20147.4计算的CIELABL* 、a* 、b* 坐标作为输入值的情况。本文件给出了用来描述来自反射或透射物体的两种颜色刺激之间的色差,包括用于模拟反射或透射物体的显示设备,但前提是这些刺激所代表的三刺激值已经适当归一化。
本文件不适用于主要光源发射光或镜面反射光的区域的颜色刺激。

Publish Date: 2026-04-30

DB15/T 4378-2026 The Standard for Construction and Operation Management of Rural Mutual Pension Homes for the Elderly

Publish Date: 2026-04-30

DB15/T 4379-2026 The Standard for Construction and Operation Management of Alzheimer's Care Units in Elderly Care Facilities

Publish Date: 2026-04-30

DB15/T 4380-2026 Village-level Elderly Care Service Station Construction and Operation Management Standards

Publish Date: 2026-04-30