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(Science Dictionary)

Shadow clock: An ancient time telling device consisting of a straight base with a raised crosspiece at one end, which uses the length of the sun’s shadows because of its position, in relation to a specific location on earth, to tell the time.

_ ស្វែងរកឬបកប្រែពាក្យផ្សេងទៀតនៅប្រអប់នេះ៖
_ខាងក្រោមនេះជាសៀវភៅនិងឯកសារសម្រាប់ការងារនិងរៀនគ្រប់ប្រភេទ៖
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