可以打開起重機控制室鎖住的門的鑰匙。為了安全，非相關人員禁止進入。
A key that unlocks the crane control room. Only authorized personnels are allowed to enter for safety reasons.
可以打開起重機控制室鎖住的門的鑰匙。為了安全，非相關人員禁止進入。
A key that unlocks the crane control room. Only authorized personnels are allowed to enter for safety reasons.