GB/T 4837-1984

Abolished

Typewriters--Layout of printing and function keys

打字机打印键和功能键的布局

Standard Type

GBT

ICS

35.180

CCS

L63

Status

废止

Issue Date

1984-12-27

Implementation

1985-07-01

Responsible Dept

国家标准委

Drafting Unit

国家标准委

📋 Scope / 适用范围 ai_extracted

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📝 Foreword / 前言 ai_extracted

本标准主要参照GB/T 1573-2001《煤的热稳定性测定方法》制定。本标准与GB/T 1573-2001 相比，其主要差异如下: — 调整了筛孔直径和筛分时间; — 辅助指标只保留了BTS一。o BTS_. 本标准由中国煤炭工业协会科技发展部提出。本标准由全国煤炭标准化技术委员会归口。本标准起草单位:煤炭科学研究总院煤炭分析实验室。本标准主要起草人:皮中原、姚恩题。本标准为首次制定。 MT/T 924- 2004 工业型煤热稳定性测定方法

📚 References & Relations / 引用与关联

normative_reference GB/T 483

normative_reference MT/T 915

Content extracted by AI. Not officially verified.