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3, 4 Difluorobenzonitrilni qanday samarali ishlatish mumkin?
3, 4 Difluorobenzonitril, kimyo sohasida keng qo'llaniladigan birikmalardan biridir
By Adelaide
11
0
Maxsus shaklli niqob mashinasi qanday afzalliklarga ega?
Maxsus shaklli niqob mashinalari, zamonaviy ishlab chiqarish jarayonida muhim ahamiyatga ega
By Fatuma
34