- 14
- Mar
yonma-yon o’ralgan yong’in eshigi, 22 × 36 kirish eshigi, chiqish eshigi yong’in darajasi
Yong’in eshigi qulfi har qanday favqulodda kirish eshigi, xavfsizlik chiqish eshigi, yong’in eshigi, qochish eshigi, yong’inga chiqish eshigi uchun javob beradi. Ayniqsa, xarid qilish markazlarida yong’inga qarshi eshik qulflari odamlar oqimini nazorat qilish, ruxsatsiz ketishning oldini olish va o’g’irlikning oldini olish uchun javob beradi.
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