79
4.3. Polimerlar va plastmassalarga ishlov berish ................................. 61
4.4. Bosim bilan presslab quyish ........................................................ 62
4.5. Plastmassalarni payvandlash ....................................................... 62
4.6. Plastmassalarga mexanik ishlov berish ........................................ 63
4.7. Rezina materiallar ........................................................................ 64
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