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Database: 189759 (26 Oct 2025)
JY 0309-1991 English PDF
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JY 0309-1991
: Models of the ladder-shaped dsm and the ditch
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JY 0309-1991
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Models of the ladder-shaped dsm and the ditch
JY 0309-1991
PDF similar to JY 0309-1991
Standard similar to JY 0309-1991
JY/T 0587
GB/T 20394
GB 17498.6
JY/T 0408
JY/T 0410
JY/T 0407
Basic data
Standard ID
JY 0309-1991 (JY0309-1991)
Description (Translated English)
Models of the ladder-shaped dsm and the ditch
Sector / Industry
Education Industry Standard
Classification of Chinese Standard
Y54
Word Count Estimation
4,442
Date of Issue
11/28/1991
Date of Implementation
5/1/1992
Quoted Standard
JY 0001; JY 0002; JY 0026
Summary
This standard specifies the product classification trapezoid-shaped dam and canal models, technical requirements and test methods, inspection rules, marking, packaging, transportation and storage. This standard applies to primary school teaching trapezoid-shaped dam and canal models.
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