带铰链的窗
1.a hinge that looks like the letter T when it is opened; similar to a strap hinge except that one strap has been replaced by half of a butt hinge that can be mortised flush into the stationary frame.
5.any of various devices for taking hold of objects; usually have two hinged legs with handles above and pointed hooks below.
6.3 Sash cables shall be constructed from sturdy material. A steel wire and sprocket system is preferred for its strength and durability.

