"thin plate" - Translation from English to Arabic

Reports indicate that educators regularly hit the children on the head with a bunch of keys or a thin wooden chair plate and punched the upper part of their bodies.
Reports indicate that educators regularly hit the children on the head with a bunch of keys or a thin wooden chair plate and punched the upper part of their bodies.

This consisted of lengths of thin metal plate, probably from the tail fins of a small aircraft bomb.
This consisted of lengths of thin metal plate, probably from the tail fins of a small aircraft bomb.

In order to increase the lifetime of the test plate, it may be covered with a thin ceramic sheet with the same low thermal conductivity.
ولزيادة عمر لوحة الاختبار، يمكن تغطيتها بصحيفة رفيعة من خزف له نفس التوصيلية الحرارية.