brown stain

常见例句

She stared at the brown stain that splotched the front of her dress.
海茨帕因痛苦而目瞪口呆，瞅着她衣服前的污点。
A reddish-brown crystalline compound, C16H12O6, used as an indicator and a biological stain.
氧化苏木精一种红褐色的晶体化合物，c16h12o6，用作。
This paper deeply studied formula for making seasoned bamboo shoot and its process techniques, and proposed new solution of some questions, such as brown stain, colourfading and tyrosine separation.
对竹笋调味笋的各种配方和加工工艺作了深入研究，并对竹笋加工中存在的褐变、褪色、酪氨酸析出等问题提出了新的解决方案。

The result, after several days, was a sludgy brown stain at the bottom of the reaction vessel—a stain that proved to contain amino acids.
ECONOMIST: Stanley Miller
The shavings were then immunostained—bathed in a special reagent that would mark the presence of abnormal proteins with a bright, telltale red or brown stain on the surface of the tissue.
NEWYORKER: Offensive Play
Officials tried to stain the marbles brown again, put up a railing (which still survives) to keep the public at a decent distance, and held an internal inquiry designed to place blame on lowly members of staff with drinking problems.
ECONOMIST: Scraping the marbles