العربية | إنجليزي |
---|---|
قياس m | gnomonobject used to tell time by the shadow it casts when the sun shines on it |
سرعَة الضوء | speed of lightthe speed of electromagnetic radiation in a perfect vacuum |
جهاز تحكم منطقي قابل للبرمجَة | programmable logic controllerprogrammable electronic device |