DAA exhibits L-shape with steps or plateaus.

Compared with DAA's methyl ester, both the products'maximal excitation wavelengths andemission wavelengths are red shifted.

对这两个产物荧光性质的研究表明, λ(ex) 在280-290nm之间,λ_(em) 在345-355nm之间,与脱氢松香酸甲酯相比,它们的激发波长与发射波长均有所红移.

Pod dehydrated drastically at 16-18 DAA.

花后16-18d豆荚急剧失水.

She put a dab of butter on the toast.

她在吐司上抹了一点黄油.

There ,'said Solomon , making a dab at Miss Pross's lips with his own.

他用自己的嘴唇碰了碰普洛丝的嘴唇.

Dab the paint on with a sponge.

用海绵扑上颜料.

I put a dab of butter on my bread.

我往面包上抹了点黄油.

Every now and then came a good dab of dirt at him.

时时有一团泥扔到他脸上.

She had given her face a dab with a wet towel.

她把脸用湿毛巾略略擦一下.

Dab the coffee off with your handkerchief.

用你的手帕把咖啡擦掉.

She gave me a dab with her umbrella.

她用雨伞轻轻拍了我一下.

Mary is a dab hand at cooking beef.

玛丽是烹煮牛肉的行家.

This teacher is a dab hand with naughty boys.

这位老师是对付调皮鬼的老手.

Ian is a dab hand at the orient art.

伊恩是东方艺术的行家.

Mary a dab hand at cooking beef.

玛丽是烹煮牛肉的“行家”.

She's a dab hand at cards.

她是个打牌能手.

She a dab hand at chopsticks.

她是个使筷子的能手.

She is a dab hand at golf.

她是打高尔夫球的高手.

My father is a dab hand at baking bread.

做面包是我父亲的拿手好戏.

He's a dab hand at cooking spaghetti.

他是煮意大利面条的高手。

He is a dab hand at basketball.

他是个篮球健将.