白桦硬度

本数据记录了白桦中硬度的序号、记录本序号、试样序号、含水率、试验时端面硬度、含水率15%时端面硬度、试验时弦面硬度、含水率15%时弦面硬度、试验时径面硬度、含水率15%时径面硬度等记录。木材物理力学的各项测定指标，直接反映此种木材的强度等特性，为木材利用和木结构的规范等提供科学数据。本数据库包括物理力学数据和其试验方法（请参看附件1中华人民共和国国家标准GB1927～1943-91《木材物理力学性质试验方法》，附件2木材物理力学各个项目的定义）。

This dataset documents the following parameters related to hardness tests for white birch: serial number of the hardness test, log serial number, specimen serial number, moisture content, end hardness at the time of testing, end hardness at 15% moisture content, tangential hardness at the time of testing, tangential hardness at 15% moisture content, radial hardness at the time of testing, and radial hardness at 15% moisture content. All measured physical and mechanical property indicators of wood directly reflect the strength and other characteristics of this wood, providing scientific data for wood utilization and the formulation of wood structure specifications. This database includes physical and mechanical property data and their corresponding test methods (please refer to Attachment 1: National Standard of the People's Republic of China GB1927～1943-91 *Test Methods for Physical and Mechanical Properties of Wood*, and Attachment 2: Definitions of each item of wood physical and mechanical properties).

搜集汇总

背景与挑战

背景概述

该数据集记录了白桦木材的硬度数据，包括不同含水率和不同面的硬度测量值，为木材利用和木结构规范提供科学依据。数据来源于国家林业和草原科学数据中心，质量可靠，错误率低。