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Anonymous users2024-01-24One of them is mainly the stability is relatively strong, the second is beautiful, if it is a piece of iron, then a large door will definitely appear than the flat phenomenon and the overall shape of the door is unstable. It is composed of uneven patterns and parallelograms, which mainly play a role in stability and aesthetics.
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Anonymous users2024-01-23Because parallelograms are volatile.
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Anonymous users2024-01-22A parallelogram is an unstable structure.
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Anonymous users2024-01-21All I know is that when you ask this question, you must not be hungry (full).
Instability of parallelograms.
A group of quadrilaterals with two opposing sides parallel to each other is called a parallelogram [1]. Parallelograms are generally named with the name of the figure plus four vertices in sequence. Note: When using letters to represent quadrilaterals, be sure to indicate each vertex in a clockwise or counterclockwise direction, otherwise it is wrong. >>>More
It depends on which brands you buy, many anti-theft doors now have that kind of copper cat's eye, which is the kind that prevents the cat's eye lock picker from unlocking, there is really none, you can only buy one and install it yourself.
Because when the door was closed, it was locked with a medicine key.
Handle problem, don't have a handle that can't be opened inside and outside.
Huajue anti-theft door inherits the advantages of Wang Li anti-theft door, and the aesthetics of the door and the anti-technical opening time of the lock have been upgraded from the original 180 minutes to 270 minutes. So whether it is Huajue or Wang Li, it is very good.