Zanjirli drayvlar turli sanoat ilovalarida ishlatiladigan keng tarqalgan mexanik uzatish tizimidir.Ular, asosan, harakatni bir elementdan ikkinchisiga o'tkazish uchun spiral yoki spiral tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tishli tirgaklardan foydalanishni o'z ichiga oladi.Biroq, zanjirli haydovchining o'ziga xos turi mavjud ...
"Nian" dastlab yirtqich hayvonning nomi edi va u har yili bu vaqtda odamlarga zarar etkazish uchun paydo bo'ldi.Boshida hamma uyda yashiringan.Keyinchalik odamlar asta-sekin Nianning qizil rangdan, kupletlardan (shaftoli jozibasi) va ... qo'rqishini aniqladilar.
