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Database: 189760 (25 Oct 2025)
JY 0117-1991 English PDF
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JY 0117-1991
: Teaching knifebreak switch
Standard ID
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STEP2
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Standard Title (Description)
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JY 0117-1991
English
199
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Teaching knifebreak switch
JY 0117-1991
PDF similar to JY 0117-1991
Standard similar to JY 0117-1991
JY/T 0587
GB/T 20394
GB 17498.6
JY/T 0408
JY/T 0410
JY/T 0407
Basic data
Standard ID
JY 0117-1991 (JY0117-1991)
Description (Translated English)
Teaching knifebreak switch
Sector / Industry
Education Industry Standard
Classification of Chinese Standard
Y54
Word Count Estimation
5,516
Date of Issue
11/6/1991
Date of Implementation
1/1/1992
Older Standard (superseded by this standard)
JY 117-1982
Quoted Standard
JY 0001; JY 0002; JY 0026
Summary
This standard specifies the content of teaching knife switch product classification, technical requirements, test methods and inspection rules. This standard applies to teaching demonstration experiments and student groups to experiment with the teaching knife switch.