Mute
user5408070202912
Construir uma escada rolante bidirecional - o quê?! Nós encontramos esta escada rolante bidirecional selvagem na Alemanha, e no começo, pensamos que era alguma brincadeira de escada rolante porque ela não se movia! Mas então começou a se mover dependendo se estávamos subindo ou descendo - honestamente, é tão inteligente! E tem setas e um sinal de não ir para que você saiba quando usá-lo e em qual direção ele está se movendo. Curiosidade: As escadas rolantes bidirecionais são projetadas para eco...
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