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2.721-74. . .


Unified system for design documentation.

Graphical designations in schemes.

Graphical symbols of general use

1975-07-01

1.

.., .., .., .., .., ..

2 . 18.03.74 N 605

3. 2.721-68, 2.783-69, 2.750-68, 2.751-73

4. -

5. ( 1998 .) N 1, 2, 3, 4, 1981 ., 1987 ., 1991 ., 1994 . ( N 6-81, 7-87, 10-91, 5-94)

2.721-74 pdf


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: 04. 02. 2015


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