常見例句雙語例句The density measurement technology of foam material with low atomic number was established by low energy X-ray radioscopy .採用低能X射線對低原子序數(shù)泡沫樣品進行透射照相，以膠片作爲記錄介質(zhì)，對材料密度進行測量。 返回 low-atomic-number material