A free radical is a molecular fragment having an unpaired electron.自由基是一种具有未配对电子的分子碎体.Conclusion: DIT was absorbed in molecular form, not in form of I -.结论: DIT是 以分子形式吸收参加代谢的, 而不是先转化成I - 形式后再吸收.The hydrophobicity is rela...
Crane is a kind of bird with very long legs and neck.鹤是一种腿和脖子都很长的鸟.We used a crane to lift the piano into the theatre.我们使用起重机将钢琴搬进剧场.Must we wait till the crane arrives before we start loading?非要等起重机来了才能装运 吗 ?...
厨房的钟六点十分了。It was ten past six by the kitchen clock.差四分六点。It's four minutes to six.列车将在六点钟离开火车站.The train is departing from the railway station at 6 o'clock....