N - hydroxyethylpyrrolidone ( NHP ) was synthesized from ? ? - butyrolactone and ethanolamine on Y molecular sieve catalyst by two steps.以改性Y分子篩為催化劑,γ-丁內(nèi)酯和乙醇胺為原料,采用γ - 丁內(nèi)酯法兩步合成N - 羥乙基吡咯烷酮 ( NHP ).Surface active propertie...

n.乙醇胺，氨基乙醇，膽胺...

The most abundant phospholipid in many cells is phosphatidyl ethanolamine or cephalin.在許多細(xì)胞中,含量最高的磷脂是磷脂酰乙醇胺或腦磷脂.OBJECTIVE To study and improve the synthesis of liposome excipient phosphatidyl ethanolamine.目的研究并改進(jìn)脂質(zhì)體輔料磷脂酰...

I slowly zipped and locked the heavy black nylon bags.我慢慢地把那些沉重的黑色尼龍袋的拉鏈拉上并鎖好。She zipped her jeans.她拉上了牛仔褲的拉鏈。He zipped up his jeans.他拉上牛仔褲的拉鏈。...

cosmoses的音標(biāo)：...

The seagulls swirled in aerial combat over the barges.海鷗盤(pán)旋在駁船上方，展開(kāi)空中的搏斗。a flock of seagulls一群海鷗Seagulls followed in the wake of the huge ship.海鷗尾隨于大船之后....

這種現(xiàn)象在許多特化的 蟲(chóng)媒花 中較常見(jiàn),尤其是通過(guò)蜜蜂傳粉的花.It helps to promote cross - pollination and is often combined with self - incompatibility....

The book is inscribed: To John Arlott from Laurie Lee.書(shū)的題贈(zèng)是：獻(xiàn)給約翰·阿洛特——?jiǎng)邴悺だ睢id Laurie know something, and hold it over Felicity?勞麗是否知道點(diǎn)什么，并以此要挾費(fèi)莉西蒂呢？So Laurie played and Jo listened, with her nose luxuriously buried in h...

n.承認(rèn)，承認(rèn)書(shū)，感謝( acknowledgment的名詞復(fù)數(shù) )...

arbomycin的音標(biāo)：arbomycin的英式發(fā)音音標(biāo)為：['ɑ:b?mi:s?n]arbomycin的美式發(fā)音音標(biāo)為：['ɑb?mis?n]...

n.吲哚酚，羥基吲哚，吲羥...

“尼泊爾”的英語(yǔ)可以翻譯為：Nepal ...

growthmanship的音標(biāo)：growthmanship的英式發(fā)音音標(biāo)為：['gr??θm?n??p]growthmanship的美式發(fā)音音標(biāo)為：['gro?θm?n??p]...

薄葉中部的...

他能聽(tīng)見(jiàn)她的狗在暗處吠叫、哀嚎。He could hear her dog barking and whining in the background.他從車(chē)庫(kù)的暗處走出來(lái)。He emerged from the dark recesses of the garage.我在暗處端詳著自己。I was peering about me in the gloom....

n.室管膜細(xì)胞...

She sat on Rossi's knee as he whispered in her ear.她坐在羅西的膝蓋上，聽(tīng)他低聲耳語(yǔ)。The Colonel bowed his head and whispered a prayer of thanksgiving.這位上校低頭輕聲做感恩祈禱。The song hovered, like a whispered benediction, above the crowd.歌聲繚...