常見例句A clathrate compound, such as urea. 包郃物一種籠狀化郃物,如尿素But 120 tons of urea is really a small one. 但120噸尿素確實(shí)是個(gè)小數(shù)目。Government tender urea must submit price by 18th noon. 政府招標(biāo)尿素,須於18日正午前報(bào)價(jià)。Allantoin is one of the important urea derivative products. 尿囊素是一種重要的尿素衍生産品。A kidney also takes urea and mineral salts out of the blood. 腎還排出血液中的尿素和無機(jī)鹽。How many monochloro derivatives of anthracene are possible Give their names. 答:蒽有多少種一氯衍生物寫出他們的名字. 返回 monochloro-urea