検索ワード: pelydryn adlewyrchedig (ウェールズ語 - 英語)

pelydryn herschelobject name (optional)
herschel's ray

pelydryn gammaadvanced urls: description or category
gamma-ray

gan martin r. jones\ animeiddiadau pecyn jet, pelydryn a tân gan mark grantdescription
by martin r. jones\ jet pack, beam and fire animations by mark grant

rhaid inni atal gwastraff drwy wella dulliau o inswleiddio tai , defnyddio bylbiau golau ynni isel , drwy sicrhau bod pob oergell a rhewgell sydd ar werth yn effeithlon iawn , drwy osod osgilosgopau pelydryn cathod gyda monitoriaid ynni isel ac ati
we must eliminate wastage by improving house insulation , by using low energy light bulbs , by demanding that every refrigerator and freezer on sale are highly efficient , by placing cathode-ray oscilloscopes with low energy monitors and so on